If the Bristol players want to stop playing and listen to Carley explaining, after they had asked him to, that's fair. They can't expect the Wasps players to stop and listen though. There are plenty of moans that Dan didn't take it from the correct spot. He took it from a couple of meters back. Fair enough.
I think many teams use the Ref 'chat' as a means to hold the game up and get a bit of a rest, so, well, that's tough. Just look at how many times Faf de Clerk gets on with it with a tap and go. Good on him, and good on Dan.