And then you go to check if that actor overlaps, will you be detecting the biggest box collision as part of that “actor”? Is this what the ignore setting is for in the collision settings? Thanks!
If you’re checking like this

then the overlap will be generated by that specific collision box.
If you’re checking like this

any collision box that overlaps, will cause the overlap.
The ignore box in the collision settings, is to do with what sort of world objects the collision volume should respond to.