I'm not involved with the hiring process at Delta so please don't take any of my opinions as Delta policy.

My experience 15 yrs ago was tailored towards a Delta where 98% of the pilots were prior military (before they dropped the 20/20 vision and no nepotism policies). I had already pinned on O4 so they didn't ask me that question. But they did know exactly how many yrs I had been in the service and knew what the expected rank should be. They did look at my OER's and ask me specific questions during the HR portion of the interview. I was sitting next to a former Blue Angel (no kidding) and an F-15 driver while we waited for the decision on the conditional job offer..and was wondering how I got lucky enough to be in that position. Anyway, they must have needed guys with experience saving penguins and all three of us got lucky with the job offer.

If they did ask about the board, I would just say that you were recommended for promotion, you don't know why you weren't selected, so you decided to take this opportunity to move over to delta.

Delta hired almost exclusively civilian part 121 RJ drivers in 07-08, and I'm sure the process has evolved. I recommend searching this board for other guys in the pool and what interview prep services they used. I've seen some posts from "aero crew solutions" or something like that over on the L&G about Delta thread..maybe he's got the good gouge.

Again, don't sweat any perceived blemishes on your record. If your prior military, they know that non-selection is one topic they may investigate to see how a candidate reacts. As long as you're honest and willing to openly discuss anything they bring up, you've got a good shot. Delta's got a great pilot group and we were all in your shoes yrs ago...we wish you the best whether you get on here or with another airline. Good Luck..