I’m always asked if ‘everything is alright’ or if the food is to my satisfaction at the exact moment I’ve just filled my mouth with a forkful of food. I’m sure staff are trained for that precise timing.
Went to L’Atelier Robuchon a few years ago, some of the best food I've ever had but in the end I had to ask the waiters to just give us a little space. It was like having a third person sat at the table, asking us questions all the time.