Acorn, several of them have already been noticed.

And yes - they are VERY good.

As you say, the session doesn't really lend itself to a lot of chat, and i'm sure they weren't being deliberately rude. As I said at the beginning of the thread, they meet at festivals over the course of the year. And when they meet, they play together almost constantly. There's going to be a synergy there which may come across as insularity.