How many movies have Heinz Hölscher and Werner Twardy collaborated on?

They have worked on 2 movies together! Their first movie together was Wer zuletzt lacht, lacht am besten (1971) while their highest rated movie together was Kinderarzt Dr. Fröhlich (1972). They have not worked together since Kinderarzt Dr. Fröhlich (1972).