Question: What profession do Claude Lelouch and Danny Leiner have in common?

Context articles: A Man and a Woman: 20 Years Later
Claude Lelouch
Charles Gérard
Danny Leiner
Charles Denner
24 heures d'amant
In the Affirmative
Pour Un Maillot Jaune
A Man and a Woman
Pierre Uytterhoeven

A Man and a Woman: 20 Years Later (French: Un homme et une femme, 20 ans déjà ; literally "A Man and a Woman, 20 Years Already") is a 1986 French drama film directed by Claude Lelouch and is a sequel to Lelouch's 1966 film "Un homme et une femme".
 It was screened out of competition at the 1986 Cannes Film Festival.
Claude Barruck Joseph Lelouch (] ; born 30 October 1937) is a French film director, writer, cinematographer, actor and producer.
Charles Gérard (born 1 December 1926) is a French actor and director of Armenian origin.
 He has appeared in more than fifty films since 1957.
 In many films he worked with director Claude Lelouch.
 He is a close friend of Jean-Paul Belmondo for over 60 years.
 In 2013, the two appeared in the film "Les Bandits manchots" directed again by Claude Lelouch.
Danny Leiner is a film director whose credits include "The Great New Wonderful", "Harold & Kumar Go to White Castle", "Dude, Where's My Car?
", "Layin' Low", and "Time Expired".
Charles Denner (29 May 1926 – 10 September 1995) was a French actor born to a Jewish family in Tarnów, Poland.
 During his 30-year career he worked with some of France's greatest directors of the time, including Louis Malle, Claude Chabrol, Jean-Luc Godard, Costa-Gavras, Claude Lelouch and François Truffaut who gave him two of his most memorable roles, as Fergus in "The Bride Wore Black" (1968) and Bertrand Morane in "The Man Who Loved Women" (1977).
24 heures d'amant is a 1964 film by Claude Lelouch, starring Carlos da Silva and Luce Dijoux.
 Set during the 24 hours of Le Mans race, Lelouch used shots from the 1963 race for its racing sequence.
In the Affirmative (French: "L'Amour avec des si" ) is a 1962 French film by Claude Lelouch.
 Though Lelouch had experienced failure with his debut feature "Le Propre de l'homme", he managed to gain favourable exposure when the film was sent to be exhibited in Sweden and earned compliments from Swedish film director Ingmar Bergman.
 It was entered into the 14th Berlin International Film Festival.
Pour Un Maillot Jaune is a French 1965 documentary – described as a cinematic tribute – about the 1965 Tour de France.
 It was made by the French film director, Claude Lelouch.
 Lelouch is best known as the director of "Un Homme et Une Femme" ("A Man and a Woman" in English) in 1966.
A Man and a Woman (French: "Un homme et une femme" ) is a 1966 French film written and directed by Claude Lelouch and starring Anouk Aimée and Jean-Louis Trintignant.
 Written by Lelouch and Pierre Uytterhoeven, the film is about a young widow and widower who meet by chance at their children's boarding school and whose budding relationship is complicated by the memories of their deceased spouses.
 The film is notable for its lush photography, which features frequent segues between full color, black-and-white, and sepia-toned shots, and for its memorable musical score by Francis Lai.
Pierre Uytterhoeven is a screenwriter.
 He won the Academy Award for Best Original Screenplay in 1966 for his work with Claude Lelouch in "A Man and a Woman".
 In 1986 he worked with Lelouch again on the film's sequel, "".