You have to connect two controllers
I ran split screen with my wife last night with my 6700XT which I think is probably pretty close performance wise to a series s. It ran great at 1080p. I wonder if the advertised 1440p is the hold up?
Lowering the resolution for split screen on a AAA game seems like a reasonable enough sacrifice for me.
Eating a grape: wow this is identical to drinking cough syrup