Different culling patterns for each branch in a tree (based on another tree structure)

Hi,

I have a tree_A with the same amount of items in each branch, and I would like to cull items so that each branch has a different length.

The way I want to do this is by using another tree_B as a "cull pattern", i.e. shortening each branch in tree_A to match the list length of the corresponding branch in the tree_B.

If I hook up tree_B to a boolean parameter it replaces each item with a "True" value, so I was trying to fill up each branch with "False" values so that the list length of all branches match the branches in tree_A. Maybe then the cull component would work but I haven't succeeded yet.

Does that make any sense? Is this even the right approach?

Please see attached image and thanks for any help!