Originally Posted by orbitmic

Some airports accommodating long haul planes with long time on the ground tend to disembark at a gate and then ask them to leave the gate only to return later (I've seen it at some Australian airports for instance), but most will just leave the plane at the gate to disembark and embark again so typically it's either bridge or bus for both disembarkation and embarkation unless one is domestic and one international (happens quite a bit for LHR T5 when BA planes which arrive from abroad into a domestic gate where they are positioning for the next flight, so even though passengers are technically connected, they still need to be bussed to international arrivals, same for AF at CDG when a plane arrives from non-Schengen notionally at 2E (e.g UK, some of Eastern Europe) to then fly to Schengen notionally from 2F or the other ways round.