So here's an interesting scenario: The ticket I booked is DL-coded, NW-operated and booked as Y-class. However, on nwa.com, the reservation is showing as being booked in M-class. Now, if I had simply booked a different connection and flew on DL-operated flights, I'd be eligible for 150 percent EQMs due to the flights being booked in Y-class. But, how will NW handle this given they converted DL's Y-class ticket to M-class (note, the underlying DL ticket is showing Y-class fare basis codes).