Originally Posted by yurtripper

It's an NS-NS transfer so no immigration check, just security control.

If you arrive via a bus then you turn left as you enter the terminal building (i.e. where other pax are lining up for passport control, you take a left).

For arrival via air/jet bridge it can be slightly different. Pax from the USA should end up directly on departures level, otherwise you could be on the arrivals level. In either case you still only need to go through security control and then possibly take the stairs/lift up to the departures level.