I tried to make a graphic, I don’t know if my former explanation was sufficient…
I am trying to get the timestamp of my clip after time-remapping it twice.

With the code that I posted earlier I only get the timestamp that it has in Comp A, but not the one in the topmost layer, Comp B.
I don’t get why my valueAtTime() doesn’t make any difference!
Can somebody point me in the right direction?