It is part of a larger itinerary, the rest of it was already flown about a month ago. It was CRW-ORD-IAH-LHR (all on UA) and then LHR-FRA-DUB (on LH). This will be the last portion of this ticket. Supervisor on the premier line said that because it originated with UA then those baggage rules should prevail. My concern is that I'm going to have to argue this with Aer Lingus at 5am in DUB and I don't have anything to prove it because the system says only 1.