EDDO,
Since I attended the interview 4 months ago, no one from my group has been called (fo & Cpt). I would imagine that Qatar simply has enough candidates in the pool who are non-type rated Boeing pilots and that they would prefer type-rated pilots. I would also imagine that Qatar would have no issues with sending out an email simply stating that we were no longer under consideration for DEC.
Personally, I'm not basing any decisions on information that doesn't come directly from Qatar recruitment. Time will tell.Good luck