If you applied to Flex through the Bombardier Website,, well, I don't know what to tell you. I don't think those apps get to Richardson TX at all.
I, like many others, sent our resumes directly to Texas. Matter of fact, I, like a few others here, actually got "rejected" letters from the Bombardier site, months after we were trained and on line!!
Word of mouth and personal recomendations seem to be the only way to get in the door. Worked for me.

Best of luck

Learguy