Sorry I wasn't in the room.
Well lets anayze the 4 parties. I assume the four were Compass management, Compass ALPA, Delta management, and DALPA. Compass ALPA would want the flowthrough to contine, and Compass management probably as well to keep the longevity for the pilot group low. The lower on the longevity ladder, the lower the pay. Delta management might have had a little interest in not wanting a flowthrough, but to them, a pilot is hired based on qualifications. DALPA on the other hand is the one wild card who could have made that decision. As seen with AMR management's deal with Eagle, and all their pilots guranteed flowthroughs, the airline doesn't care if its wholly owned carrier flows to mainline. APA could have put up a fight but I think they have bigger fish to worry about. By process of elimination, of the four parties, I think we can easily single out one.