This is all pure speculation but I do think it is very plausible for NWA to sell Compass especially if NWA can get the price it wants NOW instead of 2 years from now. Plus, BB will get his foot in the door with NWA business.
Compass is poorly managed and NWA management wants to sell it off soon. Compass was a NWA pilot project. NWA management did not want it in the first place.
It is unlikely that RAH will buy Comair because BB is a beancounter and it makes no sense financially to purchase Comair and be stuck with a bunch of CRJ 200s which are on their way out.