How many movies have Hannes Gromball and Peter Moland acted in together?

They have worked on 3 movies together! Their first movie together was Katzelmacher (1969) while their highest rated movie together was Why Does Herr R. Run Amok? (1970). They have not worked together since Why Does Herr R. Run Amok? (1970). They are most known for their drama films together.