Thanx for the explanations everyone.
So if I understand this correctly(it is the hull movement that is hard to imagine):
The "Whole helicopter as one unit" starts the acceleration into the desired direction once the hull starts to tilt and not any sooner?!
I hope my question is clear now. I understand that the rotor is one thing and the hull is another. The hull responds slower and after the rotorblades. My wondering is at what instance does the helicopter move