Originally Posted by
Calm down dear
Yes I have done non-schengen to non-schengen at OSL. However this route bypasses the lounges and you end up in the non-schengen gate area with rather limited food and beverage outlets and no lounge access but there were plenty of nice and quiet places to sit. The bypass is quite neat, go straight to the head of the immigration queue and there is a small locked door on your left, you have to get the attention of a queue dragon and they get a person to accompany you through the door to a private security line.
From my experience last year (and as others have suggested) I believe that route is now closed and everyone transferring must go through Norwegian immigration and through security.