Originally Posted by
SK AAR
Sorry, I should have been more clear. My question was two-fold: Would BA/AA rebook me on UA if I dont make the connection? If no and I will be rebooked to AA the following morning, I certainly expect BA to arrange for a hotel or reimburse my hotel expenses under EU reg. 261/04, in particular if BA297 is arriving late. Reason would be that BA booked me flights which turned out to have too little time at ORD for connecting to AA.
AA will rebook you on a later flight to SEA if you don't make your connection, no problem. Whether that is on the next day's AA or the later same-day UA flight is entirely up to AA. AA has a very accommodating policy with misconnects.
Whether BA reimburses your hotel room is another question, the answer to which is probably 'no'. If you arrive on time but miss your AA flight because of immigration queues, they won't. If you arrive four hours late, you can claim €600 under EC/261, but by then you'll have probably missed all flights to SEA. If you are, say, one to three hours late and miss your AA flight, you should probably try and claim your room to BA, but I don't think it's a clear case.