It's interesting watching comedians in cars getting coffee as obviously they're always telling each other jokes and he'll often pick out bits of the other comedian's joke that he thinks really makes the joke, and it's not always what you'd first think.
It was one of those episodes that made it click for me. I can't remember which episode it was but Jerry and the other guy were discussing what it was like on stage and Jerry mentioned during the periods the audience is laughing he isn't thinking about the laughter or the crowd. Instead he's thinking about how he's going to continue the joke or transition to another one. I have found the whole series to be really insightful into the lives of comedians. I think it was one of the earlier episodes in the latest season.
He talks to Norm Macdonald about his germany bit. Norm has done that bit a lot.
IIRC Jerry just talks about how good it is, more appreciation than dissection
It's more the small jokes to each other as they're chatting, he'll point out the bridge or something like that as the bit of the joke that makes it really work.
Can't remember a specific example now, but the two of them often generally discuss how comedy works, etc.
He's a bit OTT about how it can't be taught and it seems a bit contradictory as they'll discuss how they learnt the craft and often find they did the same thing.