Originally Posted by
kt74
IMHO, OSL can be a pain to turn around in
There is no formal facility for Non-Schengen to Non-Schengen transfers. Allegedly, you can ask someone to escort you downstairs, but there are rarely any staff hanging around to do that. There is a Schengen-to-Schengen security check halfway down the pier past passport control (to avoid having to go into the public area), but this is often unmanned
Best case, you'll ask nicely and be down in 10 minutes. Worst case, you'll have to go all the way back to the main terminal, out through customs and back through security, which could be 30 minutes or more. If you've landed after a Norwegian 787 and a Turkish A320, then it will be longer
Personally, I would not chance a back-to-back in OSL
The first part is not correct, there is a non-Schengen to non-Schengen passport check just after disembarking (the left-most window stall). I used it last time and the lovely Norwegian passport officer told me to beware that there are no facilities (eg lounge, food) in the non-Schengen space downstairs.
Of course you can also use the non-Schengen to Schengen facility half-way down the pier as you mention and remain in the main terminal, use lounges and then pass to non-Schengen space again when the flight is about to depart.