Well, I'll have to wait until one of our resident experts shows up to help out. I pinged them in my last post.
You cannot treat the ansible communication as if the persons communicating are doing so telepathically. You cannot ignore the intermediary conduit that way. The original set-up in your post #119 treats the "instantaneous" communication as if the speakers have some telepathic link. The ansible is also instantaneous, but it's not analogous to that "instantaneous"!
Quantum entanglement is divorced from special relativity!