fast start improves cda and crr?

[donnybike]

Fast start estimate CdA and Crr.
Tilt Cal improves CdA and Crr according to manual.
How does til cal improve cda and crr?

I know that riding tilt and wind scaling factor are used to calculate power in real time in the unit.
How about the improved cda and crr?
Are these factored into power calculation in real time?
Or used in the post process of power analysis with issac?