Originally Posted by
rubesl
No problem, as long as you don't put your AA # on the B - D ticket (and you will lose any bebfits your AA # provides).
AA's software matches names, CC used, IP address, physical address and so forth. Duplicate or "impossible" bookings are cancelled. If you are lucky AA calls and asks which one. If you are unlucky, AA cancels the right one. If you are really, really unlucky, AA cancels both.