Of course, but the cutoff I one of perception more than physics. The airplane is “not flying” right up until the lift generated is infinitesimally more than the weight of the aircraft. Likewise, during “flight” there are times when the lift is less than the weight, during descent. So the line seems clear but it is a matter of degree. The aircraft is not doing anything fundamentally different during the takeoff roll than during flight, it is all a matter of degree. There is no magical Change in physics or process.