Hi, not sure where to post this, but I'll try in this and BA forums. I'll try to be as short as possible. My friend and her daughter were traveling to London. JFK-BOS on AA and BOS-LHR on BA. The flight was on January 1st. At JFK when they checked in at the kiosk the machine gave then boarding passes only until BOS. They were later told by the AA attendant that they'd get BOS-LHR BP at BOS. At BOS BA agant told them that they never checked in and that the check in is closed, there was one hour remaining until the flight. They said it was AA mistake made at JFK and BA is "not responsible for AA mistakes" (nice OW partner, I have to say). BA offered 9:25PM flight, but then said it was overbooked and even on the stand by there was no chance. They were told to go to AA counter (at a different terminal) and speak to them since that was their problem. When they got there the counter there was no one there. About 20 min later an AA employee showed up. The woman looked at the computer and said that BA should have put them on that flight, there were empty seats available in Business. There were no more flights out of BOS that night, no any flights to JFK. They were not able to retrieve their luggage because no one knew where it was. They ended up taking a BUS back to New York late at night. Almost a week later she had to drive back to BOS to look for her back because AA could not locate it. And of course, the bag was there all the time.

So, the question is what to do and how to get a refund. Neither AA or BA seem to care at all.