When I was fostering I had a pair, one a beautiful white lady cat who was always dignified and a small all black male who didn't know he was a cat.
Black male (BM) made it his mission to escape, he ran up the fence and onto the roof (bungalow) and then cried to be got down, but wanted to be got down without being touched.
We nicknamed him, 'the joey cat' as he was pretty but dumb.
He almost caught a spider, my friend lifted him up, he put his paw on the spider, then moved it to check and the spider scuttled away.
I had a pretty bed cover, he would wrap himself in it until it looked like a bolster.
I had a sofa bed and a friend stayed, friend put the bed back into a sofa configuration and then we heard BM wailing from inside.
FW cat would just look at him with disdain.
I think the only time they interacted was when we took them to their new home (the same owners, had not been able to take them into temporary accommodation but had got a house) they got out of their carriers and saw........ stairs.
The just ran up and down the stairs mewing at each other.