Real world experience with OW award tix. I have flown Aer Lingus (BWI-DUB-LHR) and contiuned to CPT on BA. No problems. I have also used AA to Europe, then BA & IB to/from Africa. If you do not need to use AA, then any 2 OW airlines is sufficient. Similiar language in the QF FF program. 2 OW airlines without QF or QF plus 2 additional OW airlines. I believe that is the standard for all OW FF programs that use the OW award program.