Well I’m definitely not as good as a native speaker; frankly I couldn’t understand half of the stream :komue: So, sure, while it being 2-cour is a valid interpretation, he does say “ほぼ確定” which means “kinda confirmed” 
always take these things with a grain of salt because I am quite pessimistic; if you ask me how many episodes I believe Rewrite would be, I would have no answers for you (and I wanna keep it that way)
Well practically everything that Morita was talking about was regarding his voice acting role, like how he has silent parts or w/e. That being said, based on all the fun stories they talk about for voice acting, it would make sense that they’d mention the progress of their recording.
