How many movies have Geza Pollatschik and Julius Falkenstein collaborated on?

They have worked on 2 movies together! Their first movie together was Only on the Rhine ... (1930) while their highest rated movie together was Berlin-Alexanderplatz: The Story of Franz Biberkopf (1931). They have not worked together since Berlin-Alexanderplatz: The Story of Franz Biberkopf (1931).