Originally Posted by
astrotrainempire
I have done it before on Delta, and had no problems, when I flew to Tulsa to accompany my aunt to Birmingham. The last time I did that was six years ago, and I flew NW on a round trip for two weeks, and sandwiched a AA roundtrip TUL-BHM with the aunt. I earned MQMs on AA and NW. I have Million Miler miles with Delta as a result.
Using a different airline changes the equation completely and is not comparable to the currently proposed scenario.