Quench area and HHead Milling

[msgdsrf]

So it seems the general understanding that milling of heads does not effect quench. Yet my understanding of the benefit of tight quench is the distance of valve to piston and the turbulence it creates. So milling of heads does move the valves closer and so shouldn't this be considered. It would maybe even seem that the chamber size as whole could be considered as a factor in Quench.

Any reason why my thinking is off?