How many movies have Günther Heller and Günther Kieslich collaborated on?

They have worked on 7 movies together! Their first movie together was Mädchen, zur Liebe gezwungen (1970) while their highest rated movie together was Bedtime Stories for Grownups (1974). They have not worked together since Schoolgirl Report Part 10: Every Girl Starts Sometime... (1976). They are most known for their drama films together.