So I am about to get 100K miles from BA and 150K miles from AADvantage card.

Question .... as these 2 are under the same ... OneWorld alliance. When I want to get a flight. Who do I call??? AA? or BA? How does this thing work? I will have 2 FF#s. I give them both and get a deal? Who do I book with?

Thanks for all the help.



P.S. I noticed that when for example you accumulate Continental miles, you simply go to continental airlines website and search for flights there. Those guys show you their partner flights as well. Not the same case with AA from what I've seen.