How many movies have Charlotte Müllner and Marianne Nentwich collaborated on?

They have worked on 2 movies together! Their first movie together was Der Bockerer II - Österreich ist frei (1996) 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).