How can I properly "consolidate" a combined ModelEntity?

Context being VisionOS development, I was trying to do something like

let root = ModelEntity()

child1 = ModelEntity(...)
root.addChild(child1)

child2 = ModelEntity(...)
root.addChild(child2)

only to find that, despite seemingly being together, I can only pick by children entities when I apply a DragGesture in VisionOS. Any idea what's going on?

How can I properly "consolidate" a combined ModelEntity?
 
 
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