diff --git a/python/PyQt6/gui/auto_additions/qgsmodelcomponentgraphicitem.py b/python/PyQt6/gui/auto_additions/qgsmodelcomponentgraphicitem.py
index 9055186f952..9d267daba7d 100644
--- a/python/PyQt6/gui/auto_additions/qgsmodelcomponentgraphicitem.py
+++ b/python/PyQt6/gui/auto_additions/qgsmodelcomponentgraphicitem.py
@@ -16,7 +16,7 @@ QgsModelComponentGraphicItem.Flag.__and__ = lambda flag1, flag2: _force_int(flag
 QgsModelComponentGraphicItem.Flag.__or__ = lambda flag1, flag2: QgsModelComponentGraphicItem.Flag(_force_int(flag1) | _force_int(flag2))
 try:
     QgsModelComponentGraphicItem.__attribute_docs__ = {'requestModelRepaint': 'Emitted by the item to request a repaint of the parent model scene.\n', 'aboutToChange': 'Emitted when the definition of the associated component is about to be\nchanged by the item.\n\nThe ``text`` argument gives the translated text describing the change\nabout to occur, and the optional ``id`` can be used to group the\nassociated undo commands.\n', 'changed': 'Emitted when the definition of the associated component is changed by\nthe item.\n', 'repaintArrows': 'Emitted when item requests that all connected arrows are repainted.\n', 'updateArrowPaths': 'Emitted when item requires that all connected arrow paths are\nrecalculated.\n', 'sizePositionChanged': "Emitted when the item's size or position changes.\n"}
-    QgsModelComponentGraphicItem.__virtual_methods__ = ['flags', 'linkPointCount', 'linkPointText', 'editComment', 'canDeleteComponent', 'deleteComponent', 'editComponent', 'strokeStyle', 'titleAlignment', 'iconPicture', 'iconPixmap']
+    QgsModelComponentGraphicItem.__virtual_methods__ = ['flags', 'getLinkedParamDataType', 'linkPointCount', 'linkPointText', 'editComment', 'canDeleteComponent', 'deleteComponent', 'editComponent', 'strokeStyle', 'titleAlignment', 'iconPicture', 'iconPixmap']
     QgsModelComponentGraphicItem.__abstract_methods__ = ['fillColor', 'strokeColor', 'textColor', 'updateStoredComponentPosition']
     QgsModelComponentGraphicItem.__overridden_methods__ = ['mouseDoubleClickEvent', 'hoverEnterEvent', 'hoverMoveEvent', 'hoverLeaveEvent', 'itemChange', 'boundingRect', 'contains', 'paint']
     QgsModelComponentGraphicItem.__signal_arguments__ = {'aboutToChange': ['text: str', 'id: int = 0']}
@@ -30,7 +30,7 @@ try:
 except (NameError, AttributeError):
     pass
 try:
-    QgsModelParameterGraphicItem.__overridden_methods__ = ['contextMenuEvent', 'canDeleteComponent', 'fillColor', 'strokeColor', 'textColor', 'iconPicture', 'linkPointCount', 'linkPointText', 'updateStoredComponentPosition', 'deleteComponent']
+    QgsModelParameterGraphicItem.__overridden_methods__ = ['contextMenuEvent', 'canDeleteComponent', 'getLinkedParamDataType', 'fillColor', 'strokeColor', 'textColor', 'iconPicture', 'linkPointCount', 'linkPointText', 'updateStoredComponentPosition', 'deleteComponent']
     QgsModelParameterGraphicItem.__group__ = ['processing', 'models']
 except (NameError, AttributeError):
     pass
diff --git a/python/PyQt6/gui/auto_generated/processing/models/qgsmodelcomponentgraphicitem.sip.in b/python/PyQt6/gui/auto_generated/processing/models/qgsmodelcomponentgraphicitem.sip.in
index d0ad7a3d7ec..1fe08199f3c 100644
--- a/python/PyQt6/gui/auto_generated/processing/models/qgsmodelcomponentgraphicitem.sip.in
+++ b/python/PyQt6/gui/auto_generated/processing/models/qgsmodelcomponentgraphicitem.sip.in
@@ -112,7 +112,7 @@ Shows a preview of moving the item from its stored position by ``dx``,
 Sets a new scene ``rect`` for the item.
 %End
 
-    QString getLinkedParamDataType( Qt::Edge edge, int index );
+    virtual QString getLinkedParamDataType( Qt::Edge edge, int index );
 
     virtual void mouseDoubleClickEvent( QGraphicsSceneMouseEvent *event );
 
@@ -364,7 +364,8 @@ Ownership of ``parameter`` is transferred to the item.
     virtual bool canDeleteComponent();
 
 
-    QString getLinkedParamDataType( Qt::Edge edge, int index );
+    virtual QString getLinkedParamDataType( Qt::Edge /* unused in this implementation because parameters only have a bottom edge */, int index );
+
 
   protected:
     virtual QColor fillColor( State state ) const;
diff --git a/python/gui/auto_additions/qgsmodelcomponentgraphicitem.py b/python/gui/auto_additions/qgsmodelcomponentgraphicitem.py
index c6c7013495b..0a1e16ee20d 100644
--- a/python/gui/auto_additions/qgsmodelcomponentgraphicitem.py
+++ b/python/gui/auto_additions/qgsmodelcomponentgraphicitem.py
@@ -1,7 +1,7 @@
 # The following has been generated automatically from src/gui/processing/models/qgsmodelcomponentgraphicitem.h
 try:
     QgsModelComponentGraphicItem.__attribute_docs__ = {'requestModelRepaint': 'Emitted by the item to request a repaint of the parent model scene.\n', 'aboutToChange': 'Emitted when the definition of the associated component is about to be\nchanged by the item.\n\nThe ``text`` argument gives the translated text describing the change\nabout to occur, and the optional ``id`` can be used to group the\nassociated undo commands.\n', 'changed': 'Emitted when the definition of the associated component is changed by\nthe item.\n', 'repaintArrows': 'Emitted when item requests that all connected arrows are repainted.\n', 'updateArrowPaths': 'Emitted when item requires that all connected arrow paths are\nrecalculated.\n', 'sizePositionChanged': "Emitted when the item's size or position changes.\n"}
-    QgsModelComponentGraphicItem.__virtual_methods__ = ['flags', 'linkPointCount', 'linkPointText', 'editComment', 'canDeleteComponent', 'deleteComponent', 'editComponent', 'strokeStyle', 'titleAlignment', 'iconPicture', 'iconPixmap']
+    QgsModelComponentGraphicItem.__virtual_methods__ = ['flags', 'getLinkedParamDataType', 'linkPointCount', 'linkPointText', 'editComment', 'canDeleteComponent', 'deleteComponent', 'editComponent', 'strokeStyle', 'titleAlignment', 'iconPicture', 'iconPixmap']
     QgsModelComponentGraphicItem.__abstract_methods__ = ['fillColor', 'strokeColor', 'textColor', 'updateStoredComponentPosition']
     QgsModelComponentGraphicItem.__overridden_methods__ = ['mouseDoubleClickEvent', 'hoverEnterEvent', 'hoverMoveEvent', 'hoverLeaveEvent', 'itemChange', 'boundingRect', 'contains', 'paint']
     QgsModelComponentGraphicItem.__signal_arguments__ = {'aboutToChange': ['text: str', 'id: int = 0']}
@@ -15,7 +15,7 @@ try:
 except (NameError, AttributeError):
     pass
 try:
-    QgsModelParameterGraphicItem.__overridden_methods__ = ['contextMenuEvent', 'canDeleteComponent', 'fillColor', 'strokeColor', 'textColor', 'iconPicture', 'linkPointCount', 'linkPointText', 'updateStoredComponentPosition', 'deleteComponent']
+    QgsModelParameterGraphicItem.__overridden_methods__ = ['contextMenuEvent', 'canDeleteComponent', 'getLinkedParamDataType', 'fillColor', 'strokeColor', 'textColor', 'iconPicture', 'linkPointCount', 'linkPointText', 'updateStoredComponentPosition', 'deleteComponent']
     QgsModelParameterGraphicItem.__group__ = ['processing', 'models']
 except (NameError, AttributeError):
     pass
diff --git a/python/gui/auto_generated/processing/models/qgsmodelcomponentgraphicitem.sip.in b/python/gui/auto_generated/processing/models/qgsmodelcomponentgraphicitem.sip.in
index 893c8baa8ae..f243eb816e8 100644
--- a/python/gui/auto_generated/processing/models/qgsmodelcomponentgraphicitem.sip.in
+++ b/python/gui/auto_generated/processing/models/qgsmodelcomponentgraphicitem.sip.in
@@ -112,7 +112,7 @@ Shows a preview of moving the item from its stored position by ``dx``,
 Sets a new scene ``rect`` for the item.
 %End
 
-    QString getLinkedParamDataType( Qt::Edge edge, int index );
+    virtual QString getLinkedParamDataType( Qt::Edge edge, int index );
 
     virtual void mouseDoubleClickEvent( QGraphicsSceneMouseEvent *event );
 
@@ -364,7 +364,8 @@ Ownership of ``parameter`` is transferred to the item.
     virtual bool canDeleteComponent();
 
 
-    QString getLinkedParamDataType( Qt::Edge edge, int index );
+    virtual QString getLinkedParamDataType( Qt::Edge /* unused in this implementation because parameters only have a bottom edge */, int index );
+
 
   protected:
     virtual QColor fillColor( State state ) const;
diff --git a/src/gui/processing/models/qgsmodelarrowitem.cpp b/src/gui/processing/models/qgsmodelarrowitem.cpp
index ad1d52545b9..8c7c9727306 100644
--- a/src/gui/processing/models/qgsmodelarrowitem.cpp
+++ b/src/gui/processing/models/qgsmodelarrowitem.cpp
@@ -73,19 +73,7 @@ QgsModelArrowItem::QgsModelArrowItem( QgsModelComponentGraphicItem *startItem, M
 
 void QgsModelArrowItem::paint( QPainter *painter, const QStyleOptionGraphicsItem *, QWidget * )
 {
-  QString dataType;
-
-  // Possibly, the mComponentItem is an instance of QgsModelParameterGraphicItem. In this case,
-  // it needs to be explicitely casted so that the relevant getLinkedParamDataType method is being called
-  if ( QgsModelParameterGraphicItem *paramItem = dynamic_cast<QgsModelParameterGraphicItem *>( mStartItem ) )
-  {
-    dataType = paramItem->getLinkedParamDataType( mStartEdge, mStartIndex );
-  }
-  else
-  {
-    dataType = mStartItem->getLinkedParamDataType( mStartEdge, mStartIndex );
-  }
-
+  QString dataType = mStartItem->getLinkedParamDataType( mStartEdge, mStartIndex );
   QColor color = QgsModelDesignerSocketGraphicItem::typeToColorLookup( dataType );
 
   if ( mStartItem->state() == QgsModelComponentGraphicItem::Selected || mEndItem->state() == QgsModelComponentGraphicItem::Selected )
diff --git a/src/gui/processing/models/qgsmodelcomponentgraphicitem.cpp b/src/gui/processing/models/qgsmodelcomponentgraphicitem.cpp
index 82a6845cda1..3cd59410ea5 100644
--- a/src/gui/processing/models/qgsmodelcomponentgraphicitem.cpp
+++ b/src/gui/processing/models/qgsmodelcomponentgraphicitem.cpp
@@ -888,7 +888,7 @@ QString QgsModelParameterGraphicItem::linkPointText( Qt::Edge, int index ) const
 }
 
 
-QString QgsModelParameterGraphicItem::getLinkedParamDataType( Qt::Edge edge, int index )
+QString QgsModelParameterGraphicItem::getLinkedParamDataType( Qt::Edge /* unused in this implementation because parameters only have a bottom edge */, int index )
 {
   QString unknownType = QString( "unknown" );
 
diff --git a/src/gui/processing/models/qgsmodelcomponentgraphicitem.h b/src/gui/processing/models/qgsmodelcomponentgraphicitem.h
index 32e900eaa24..f01e0e26a0b 100644
--- a/src/gui/processing/models/qgsmodelcomponentgraphicitem.h
+++ b/src/gui/processing/models/qgsmodelcomponentgraphicitem.h
@@ -137,7 +137,7 @@ class GUI_EXPORT QgsModelComponentGraphicItem : public QGraphicsObject
      */
     void setItemRect( QRectF rect );
 
-    QString getLinkedParamDataType( Qt::Edge edge, int index );
+    virtual QString getLinkedParamDataType( Qt::Edge edge, int index );
 
 #ifndef SIP_RUN
 
@@ -429,7 +429,7 @@ class GUI_EXPORT QgsModelParameterGraphicItem : public QgsModelComponentGraphicI
     void contextMenuEvent( QGraphicsSceneContextMenuEvent *event ) override;
     bool canDeleteComponent() override;
 
-    QString getLinkedParamDataType( Qt::Edge edge, int index );
+    QString getLinkedParamDataType( Qt::Edge /* unused in this implementation because parameters only have a bottom edge */, int index ) override;
 
   protected:
     QColor fillColor( State state ) const override;