I am travelling from MAA-DOHA-ORD-DTW. Traveling with Qatar Airways from MAA-DOHA-ORD. ORD-DTW in American Airlines. Is all three boarding pass are provided at Chennai itself. Or I need to do seperate check-in at chicago for AA.? How the web-check-in will work? I am not seeing all the three flights details in Qatar Airways website, I am seeing only for QR.