It's a chicken or the egg scenario though.

What we see is dependant on the result of the findings of this question.

An observer would see a large jet on a treadmill type conveyor belt. Initially the plane would not be moving as the wheel movement is being negated by the conveyor.

But as thrust is applied how that overcomes the lack of forward motion is the question here. I believe that wind speed and atmosphere are irrelevant to the plane achieving flight since propultion along with the wing design and purpose are enough to overcome the lack for forward motion.

But a vehicle moving at 200+ MPH without wings is also able to achieve flight. So again: the chicken or the egg?

I still believe that forward motion works in a symbiotic relationship to the method of thrust and wing design but they can also produce flight independant of each other.