DL will tell you that they bought NW!! The NWA guys I have spoken with rave about the merger, however. It seems that it was the ONLY amicable merger that ever occurred.
I am dubious about how amiable it really is. When I was a pup, there were Capitol guys still whining about how badly they were treated by UAL; Panagra guys screaming that Braniff ALPA screwed them and they, in turn, were screwed by the EAL when Braniff sold its SA routes to EAL. There is no end to the merger stories.
Oh, I forgot about how the Trans Carib guys got a good deal by AA and how Air Cal was a screw job by the APA in their merger. And how the "target heads" (that's NWA) screwed the Republic pilots.