How many movies have Gilles Gaston-Dreyfus and Marie-Claude Lang-Brenguier collaborated on?

They have worked on 1 movie together! Their first movie together was Léon Blum : Thérèse et Léon (2001) and was their highest rated movie together. They have not worked together since Léon Blum : Thérèse et Léon (2001).