Originally Posted by
JPG3392
AA can and will open award seats on its own flights under these circumstances, but it can only request BA (or IB, if that's a possibility) to do so and BA is free to decline. BA can also offer seats in Y but not J..
Interestingly I had to speak to the AA liasion desk about something else today and inquired what would happen in such a situation. They said if the schedule change happens 24+ hours out from the flight, I'm at the mercy of whatever rebooking options the operating carrier offers or the award space available at that time.