After watching Uneasy Lies The Crown, many, many times over the years, I realised there is another, the writers to the viewers, whether it was intended I don't know?
When Columbo goes to Wesley's house for the first time and they are talking about the situation, Wesley says that he doesn't know what was going on around the house etc. because he was at the card game, and Columbo says "Very good!!", obviously making it sound like Wesley created a good alibi, and Columbo is complimenting him (but he's going to get him in the end, because he knows he's lying), then he says "The bagel, it's very good".
At that point only the writers and the viewers know what Wesley did, Columbo knows nothing, so for that dialog to be relevant it would be the writers to the viewers.