Am flying BA from Paris to Heathrow and then on to JFK with AA (using points). Arrive Heathrow at 8.15am and AA flight is not until 2.50pm. There is an earlier AA flight I could try to catch (at 9.45am) rather than wait at Heathrow for nearly 5 hours. I have 2 questions: Would there be enough time to get from BA to AA terminal at Healthrow to try and catch the earlier flight (as I will be in transit don't have to get through customs)? Has anyone had experience trying to change a flight with AA when using points? Any advice much appreciated. Oh, and am flying Y so assume chances of changing flight might be small...