GUARANTEED, that if there are furloughs due to the merger, DC-9's or not, they will be from the combined airline list
The way I see it, if they park more DC9s than what would have been parked as a stand alone, then both groups need to share in the furloughs.
Any fleet decisions they make predicated on the new Delta fleet(NWAs and Deltas birds) should be split/shared between the two groups, for good or for bad.
That is why I don't like being operated as two companies with one owner. It is a management whipsaw dream.