IIRC, DL had about 35% of the DFW O&D market when Allen pulled up stakes and left. Stagnant, but respectable and DFW area would have loved the competition to AA.
Never understood why DL didn't buy up EA, ex-BN, South American route authority. The BN were just counting seniority numbers and how'd they fit into EA, when the EA MEC said something like, "who said we were taking pilots?". So much for the milk of pilot's kibdness.
GF