How many movies have Adi Hirschal and Uli Fessler collaborated on?

They have worked on 2 movies together! Their first movie together was Es war doch Liebe (1997) while their highest rated movie together was Der Bockerer III - Die Brücke von Andau (2000). They have not worked together since Der Bockerer III - Die Brücke von Andau (2000).