> The point? Not sure. Does this reflect positively upon the some style of comedy favoured by the Brits, or negatively about their credulity? As a nominal Brit, I can't comment with any impartiality.

You’re just bitter that you never spot the ostrich first.

Prosaically, one step removed: Mornington Crescent absolutely has rules, and the joy of the show is everyone on the show is playing by them.