Are you a lawyer Thomas? Have a little think about what you wrote. Or, at least, the way I interpret what you wrote because it's not very clear.
If someone is crossing a road into which a car is turning, they have priority. If someone walks across a road which already has a vehicle (car, bus, bike or whatever) in it, they do not have priority. The vehicle enters the road when it crosses the white lines.
Which is another point. This thing about peds having priority if they are already crossing has all been about cars. It works for bikes too, if someone is walking across a road that you are turning into, they have priority if they have started to cross before you enter that road.
If someone is crossing a road into which a car is turning, they have priority. If someone walks across a road which already has a vehicle (car, bus, bike or whatever) in it, they do not have priority. The vehicle enters the road when it crosses the white lines.
Which is another point. This thing about peds having priority if they are already crossing has all been about cars. It works for bikes too, if someone is walking across a road that you are turning into, they have priority if they have started to cross before you enter that road.