Nobody said you have to be present. I've had my BP printed and waiting many times. After all, that is what the "Cleared List" is for.

UA GAs prefer to talk to the person first (e.g., couples often decline upgrades, I've seen people decline upgrades if only bulkhead is available).

For all we know he paged up Mr. A, and when he didn't respond, looked at the record and saw he was a misconnect, and moved onto Mr. B. Or there was a misconnect in F, and Mr. A was saved a seat anyway.

But of course why bother gathering any sort of possibilities when you can just start yet another of your tiring rants against PMUA.