My question is, when travelling with someone else and being seat-shifted from a former exit row, why place one of us in the A seat and the other in the F seat, particularly when there are so many paired shorthaul seats still available.

(Apparently, BA seat shifters are robots, literal robots, so it's more of a coding question than anything I would imagine.) Anyway, after an admittedly quick and pleasant call to the UK gold line, I will be monitoring MMB after about an hour to see if our re-selected exit row seats reappear.