@Knobbgb
Let me don't agree with you about SOF.
If you arrive on board A320 then you appear in transit area and you depart from the same gate as you arrived because A3 uses air bridges.
In case of flight with DH-8 you are bused to arrival area, but you can skip passport control - just need to go upstairs and downstairs to B area (B1 - B4).