Originally Posted by
zkzkz
That wouldn't be a bad idea if it could be done -- I'm not sure it can because I don't think the jetbridge can reach the rear door. Some LCCs do use both doors to board narrow bodies (using stairs rather than jetbridges). It greatly accelerates boarding and shortens the turnaround time.
Aer Lingus often use both doors at Cork (with steps, not jetbridges).