Denise, do you remember how many miles it is to upgrade? We have that same flight out of Frankfurt, but just a day later. I think we have about a 3 hour layover in Frankfurt. The AA/BA route gets us in earlier, but only has a 45 minute layover at Gatwick. I also don't think it is even possible to get off the one flight, get through customs and get to the other flight in that amount of time, let alone our luggage making the transfer. I remember we had two hours between flights at Heathrow last year and it was tight.