"Ty and That Guy" is a conversation between Ty Franck, one half of "James S. A. Corey", and Wes Chatham, who played Amos on "The Expanse", written by said pseudonym.
("I'm That Guy" is a famous and powerful Amos scene)
I think each episode is about a particular episode of the TV show, at least that's the main format. Sometimes it's the two of them, sometimes they invite someone on.
You'd imagine that it's the author talking about their baby with their friend and minion actor, but no, in at least this episode and I imagine all of them, Franck is hanging out and Chatham is the driver.
It's wonderful to see, because however much an actor loves their craft and however much they love their colleagues and crew, a lot of effort goes into creating a thing and then it's often like "ok, I did that thing, whew", maybe they want to see once how it came out or maybe they don't watch it at all. That's probably how I'd be if I did it professionally and had the next job coming up after the thing wrapped. Chatham is not, ahum, that guy.