How many movies have Rolf A. Wilhelm and Rudolf Schündler collaborated on?

They have worked on 8 movies together! Their first movie together was Tante Frieda - Neue Lausbubengeschichten (1965) while their highest rated movie together was Onkel Filser - Allerneueste Lausbubengeschichten (1966). They have not worked together since When Mother Went on Strike (1974). They are most known for their comedy films together.