How many movies have Claude Debussy and César Franck collaborated on?

They have worked on 2 movies together! Their first movie together was Toscanini: The Television Concerts, Vol. 8: Franck, Sibelius, Debussy and Rossini (1952) while their highest rated movie together was Proust ou les Intermittences du cœur (2007). They have not worked together since Proust ou les Intermittences du cœur (2007).