Possibly not, linguistics is a very different topic to modern languages. That latter is what's needed for a language teacher.
My mistake. I didn't think about the two as distinct branches.
That said, those who entered the interview and said "well I am an MD, and I spent 7 years on that, and now I'm here...
I don't want to sound like I'm undermining anything you're saying, but I would be
extremely surprised if there was a MD within the ranks of an airline. That said, I do know two doctors that have PPLs and fly as a hobby, but to say one would go to med school, do post-grad studies and then come out and say 'I only did this so I could raise my chances for an airline gig' would be....weird. Medical students tend to go into medical careers. It's one of the reasons why an interview is in place - to make sure that the student has the right aptitude etc etc. Seven years would also be extremely unlikely to attain a MD.