THIS is a GEM of an interview.
Some interesting highlights.
* he emphasizes to not blindly believe in tools and simulations and also to prioritize driver feedback above cold measurements.
This sounds like exactly what happened when AN's departure was announced. I suspect Wache thought he could replace AN with the tools and that would just magically work on the car. In retrospect, this sounds like exactly what happened with Merc's W13 and they struggled for 2 years.
* Another interesting tidbit, he didn't want to speak about all the concepts of the RB19 because he believe most teams still didn't understand them yet, so didn't want to give it away.
That is very telling too. That was the 23 car and we almost in 25 now. Just insane how good he is with aero