Originally Posted by
Yaatri
Before alliances were established, airlines had multiple partners. KLM flights earned you miles on UA or DL frequent flyer programmes. Similarly, SQ had been a mileage earning partner of DL before it joined Star alliance. DL's partnership with SQ does not nullify what PVDtoDL said.
Neither did I nullify what PVDtoDEL said. All I'm saying is that joining an alliance does not necessarily require an airline to kill all its existing partnerships with other airlines which may be part of another major alliance. It all depends on what is in their negotiated contracts. So, for example, unless you have intimate knowledge of what is in the 9W contracts with its *A partners, you can't say one way or the other for sure that AI joining *A will automatically kill 9W's partnerships.
Anyway, this discussion is not really on-topic for this thread.