Originally Posted by aktchi

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When you return: Well, you arrive in T1 and QR doesn't have a desk there. So if UA won't interline, you'll have to take your luggage to T5. My sympathies! Use the same train and do your best. If the bags are truly unmanageable, inquire about a porter helping you. (I have never faced the situation and don't know if such facility is available or how it works. At worst, offer some extra money to a cab to drive you from T1 arrivals to T5 departures!)