Can someone help me understand how this would work - My daughter and her boyfriend are flying out of AMS headed to BOS, one on IcelandAir (non US citizen) and one on Delta (US citizen) no checked luggage and both (hopefully) will have boarding passes already - Is there separate security and passport control for them since IcelandAir goes from Departures 1 and Delta from Departures 2? Is there anyway for them to queue together to share the misery? I assume once they are on the other side they can meet up for sure - IcelandAir departs two hours after DL anyhow. Thank you !