Originally Posted by
sbm12
It isn't even "behind the scenes" so much as an obvious and significant part of their play in the market. They've said so publicly.
All of the legacies have done this over the years; Delta is not alone in the practice.
Look at what Northwest did when Independence Air started service. IA started LAN-IAD service so Northwest started 5x daily LAN-DCA service. I think some of that "Protect Our Turf" filtered over to DL from NW with the merger. Or UA EWR-SFO/LAX when VX announced service.