How many movies have Gerhard Heinz and Walter Feuchtenberg collaborated on?

They have worked on 5 movies together! Their first movie together was Josefine Mutzenbacher II - Meine 365 Liebhaber (1971) while their highest rated movie together was Superbug, the Craziest Car in the World (1975). They have not worked together since Three Swedes on the Reeperbahn (1980). They are most known for their comedy films together.