AIS_MultipleConnectedInteractive selection of connected entitites

Hey everyone

i'm trying to build a hierarchical treeview from an imported step file preserving relationship between assemblies and objects. Like the model browser in CAD Assistant.

I've been using AIS_MultipleConnectedInteractive to combine multiple representations into one.
I connect (sub-)assemblies (=AIS_MultipleConnectedInteractive) and leafs (=XCAFPrs_AISObject ) to a root AIS_MultipleConnectedInteractive object.

My question:

1)It behaves as a single object in terms of selection, but is there any way to select the connected objects? So the (sub-)assemblies and leaves?