What Was the Biggest Challenge for a Scene as a Director?

The concert was really challenging because we covered it to have as much freedom as possible in the edit. We cut over 30 scenes from the movie, well, in the atic, which i've never done before. I mean, there waseo and gerti had an entire love story arc that went on - mister v. You met his family, you found out where he came from,. There was a whole complicated otell me, how may minutes wid you say those 30 sins equalled?