Originally Posted by
3galsontour
The reason for posting these miles to a BAEC is simply because I don't want to lose with the 25% BA flight AA miles reward scenario. I lived in the UK for 5 years and have a nest egg of 150,000 miles so redemption just needs some thought given to it. My attention should be given to clearing things up on these two programs though.
You can't earn AA miles on BA transatlantic flights anyway further if you are flying in discount economy (I'm assuming this since you thought you were only eligible for 25% miles accrual on AA) you will earn 25% of the flown miles on BA.
From aa.com:
British Airways' transatlantic flights to/from the U.S. are not valid for AAdvantage mileage accrual or redemption.