I've only had one recent B gate bus experience (and it was a short haul departure too), and it is quite enraging - if we're going to get a bus then do it from A10, which at least is close to security/lounges. A10 was not in use at the time. Dragging everyone out to B and then shoving them on a bus is almost insulting. The fact that is was my only experience of a B gate bus in the last year or so suggests it doesn't happen so often.