You know your guest is truly relaxed, when they can sit & pick their ear, & examine the pickings, with ease, & that you have succeeded as a hostess, in making them feel truly at ease, & at home.
Or, if, they can divulge the answers to questions you have long wished to enquire about, but have refrained from the asking. If they volunteer this information, you know they must trust you. You hide your glee, along with your further dismay, as you are intrigued by the information divulged. As opposed the information not yet divulged, which makes said info already divulged, somewhat irrelevant.
My Gosh Life can get very complicated! Perhaps the Captian Klink, is the best judge... I Know Nothing!
We all 'know nothing'. Do we not!
Roy Orbison, Falling.