@doll.zip In practice its probably a little more complicated, but you do have the idea yes. Delete bonfie's Neck bone specifically, and everything parented to that (like head), then delete bassie's Spine bone specifically (potentially needing Hips too afterwards) and you should be good to merge them before adjusting neck and head
I will say, there's a way to delete, and a way to sever. I don't recall which is which, but a heads up that you may need to dig through that blur of wording