How many movies have Edgar Ott and Gerhard Hahn collaborated on?

They have worked on 2 movies together! Their first movie together was Benjamin Blümchen - Und der Weihnachtsmann (1992) while their highest rated movie together was Benjamin Blümchen - Die Zirkuslöwen (1994). They have not worked together since Benjamin Blümchen - Die Zirkuslöwen (1994).