Yeah but there is a difference between coaching a team for a longer time or just coming in and perform. Only certain types of managers can do that. And from what I saw from Nagelsmann, he is a tactical guy, not a motivator and man-manager. In fact, thats his big weakness. He is all about tactics, outsmarting his players, getting them frustrated at times. And ofc u cant teach the players fancy new tactics with this busy schedule coming up.
Idk, u guys wanna believe, but if u ask me, we will never beat Real, City and Napoli to win the CL, but who knows.