For checking the transcript: https://www.buzzsprout.com/2379282
Talk shop
means to talk about work-related topics, especially in a social setting where work isn’t the main focus

Examples:
1- At the family barbecue, my uncle and his colleague couldn’t stop talking shop about the new project they’re working on.
2- My friends and I promised not to talk shop during our camping trip, but somehow, we ended up discussing office gossip around the campfire.