And it's gone even better than I could have dared hope. Cheddar has settled very well. She's an absolute darling, with no concept of personal space. Especially at 4.30 in the morning. Snorg has blossomed, and is much more relaxed and confident. She seems extremely protective of Cheddar which is super cute. She's getting proper one to one attention, without being interrupted for the first time. She's also much more active than before . I've seen her twice jump over cheddar. I was gobsmacked!
Only issue is that Cheddar is a very greedy cat, and stuffs her face, while Snorg is a grazer. Might have to get an automatic feeder.
Totally pointless post!