I do try "slower" when I can not understand what I hear. I do not press "slower" when, as in this case, I hear and understand but there is just a missing word. This is a bug and it has to be reported as such.
Ah, that has been fixed, perhaps thanks to you. But had I not been able to hear "du" I would never have gotten it right, since the voice did not say, "hast" -- unless the "s" is silent in this word. and yes, I played it on slow several times.