lol! It was probably for the best MM anyway, given Mimz recent health issues. If they had bonded, you might be taking them both of to those vet visits.
I actually had them together in non-neutral space last night. I’ve been impatient and just want to give Rumball more room, so I had them, me and the squirt bottle all in the same room together. It didn’t go to badly. There was some initial scuffling but as long as Rumball didn’t venture into Jersey’s hidey-nooks, they were fine. Spent most of the time in opposite corners but no territorial marking. Jersey however, was allowed in Rumball’s “personal space” she’d approach now and then and run over him, little regard for his head.
A few days ago, I opened the pen door between them and Jersey ventured into his zone. Not so good. She pranced about, finished his food, peed in his litter tray, chinned his cardboard box and generally lay claim to the space. He thought she was fair game, being there and tried to mount her. So, that space was not a good idea. I haven’t done any pen switching yet, but think it’ll benefit things, so they’re less territorial about their space.