That is where you are wrong. They will most likely wish to discover your commitment to their business henceforth will delve into why you chose to arrive on their doorstep via the route you did. Hop over to parachute dropping (for instance) and they'll most likely ask why you chose to change job.
Yes, it is just part of the interview process but you'll need to be more convincing about your ambitions than you appear here if you wish to succeed at an airline. Show your true feelings towards instructing and your feet won't touch.
Just trying to give you a heads up 'cause I can see you selling yourself and the profession of instructing short mate. Any training captain worth his weight will admire someone who shows commitment to instructing. Don't kid yourself.
VFE.