Wise you might be interested in this data log I pulled for you. This is a zoomed in view of two things. Engine RPM and Acceleration. (Through the first gear shift).

This is a foot brake launch from about 2100 RPM with a ~6400 RPM flash converter. So I was NOT up on the converter very hard.

But what you'll see is that the INSTANT the RPM start to climb... so does the acceleration of the car. So there is absolutely zero delay in throttle vs torque input to the car and getting things moving.

If you are thinking about "lag" per se... the g's pretty much skyrocket through the first 1.5g's which is over a 0.28 Second time period. So if there is any coupling delay you're thinking of, it happens very very quickly.

Just goes to show how fast things are happening.