Custom structure made with jigsaws : Branches

Hi! I want to make a custom dungeon that is sort of a big tree.
I'm following this tutorial: https://www.planetminecraft.com/blog/custom-structure-gen-documentation/
and I see that jigsaws can only generate structures which hitbox is contained inside the parent structure hitbox or does not intersecate with it.
I don't want my tree to look awfully identical every time you find one, so I wanted to add branches that terminate with jigsaws that spawn other branches (randomly from a target pool) and so on, but I'd need to resolve some matters:


    

  1. What if two branches spawned at the same time from a parent branch have overlapping hitboxes?
    2. 

  2. What if a branch, spawned at some point in the generation, takes place in a previously spawned structure (of the same process) hitbox?
    3. 

  3. How can I be sure my branches reach the end_branch structure (so leaves without other branches) before the 20th sequence generation? (the jigsaw 20 rule)
    4.
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