The Petrified Forest is a 1936 American film, directed by Archie Mayo starring Leslie Howard, Bette Davis, and Humphrey Bogart.
 A precursor of "film noir", it was adapted from Robert E. Sherwood's stage play of the same name.
 The screenplay was written by Delmer Daves and Charles Kenyon, and adaptations were later performed on radio and television as well.
Delmer Lawrence Daves (July 24, 1904 – August 17, 1977) was an American screenwriter, director and producer.
Drum Beat is a 1954 CinemaScope western film in "WarnerColor" written and directed by Delmer Daves and co-produced by Daves and Alan Ladd in his first film for his Jaguar Productions company.
 Ladd stars along with Audrey Dalton, Charles Bronson as Captain Jack, and Hayden Rorke as President Ulysses S. Grant.
Broken Arrow is a western Technicolor film released in 1950.
 It was directed by Delmer Daves and starred James Stewart as Tom Jeffords and Jeff Chandler as Cochise.
 The film is based on these historical figures but fictionalizes their story in dramatized form.
 It was nominated for three Academy Awards, and won a Golden Globe award for "Best Film Promoting International Understanding."
 Film historians have said that the movie was one of the first major Westerns since the Second World War to portray the Indians sympathetically.
The Hanging Tree is a 1959 Technicolor Western film directed by Delmer Daves.
 Karl Malden took over directing duties for several days when Daves fell ill.
 The film stars Gary Cooper, Maria Schell, George C. Scott and Malden and is set in the gold fields of Montana during the gold rush of the 1860s and '70s.
 The story follows a doctor who saves a criminal from a lynch mob, then learns of the man's past and tries to manipulate him.
Patrick Bokanowski (born 23 June 1943 in Algiers, French Algeria) is a French filmmalker who makes experimental and animated films.
Dark Passage (1947) is a Warner Bros. film noir directed by Delmer Daves and starring Humphrey Bogart and Lauren Bacall.
 The film is based on the novel of the same name by David Goodis.
 It was the third of four films real-life couple Bacall and Bogart made together.
Frank Hotaling (April 4, 1909 – April 13, 1977) was an American art director, born in New York City, whose career encompassed over 100 films, mostly B movies.
 His association with famed director John Ford led to an Oscar nomination, shared with John McCarthy, Jr. and Charles S. Thompson, for Best Art Direction-Set Direction, Color, for 1952's "The Quiet Man".
 This brought an upsurge in his film work and allowed Hotaling the opportunity to work on such A-list projects as Ford's "The Searchers" (1956), Delmer Daves' "" (1957), and William Wyler's "The Big Country" (1958).
Destination Tokyo is a 1943 black-and-white submarine war film.
 It was directed by Delmer Daves in his directorial debut, and the screenplay was written by Daves and Albert Maltz, based on an original story by former submariner Steve Fisher.
 The film stars Cary Grant and John Garfield and features Dane Clark, Robert Hutton, and Warner Anderson, along with John Ridgely, Alan Hale Sr., and William Prince.
 Production began on June 21, 1943 and continued through September 4 of that year.
 The film premiered in Pittsburgh, Pennsylvania on December 15, 1943 as a benefit for crippled children, and was released generally in the U.S. on December 31, 1943.
Parrish is a 1961 American drama film made by Warner Bros..
 It was written, produced and directed by Delmer Daves, based on the 1958 novel of the same name by Mildred Savage.
 The music score was by Max Steiner, the Technicolor cinematography by Harry Stradling Sr., the art direction by Leo K. Kuter and the costume design by Howard Shoup.

Question: Are Delmer Daves and Patrick Bokanowski both nationals of the same country ?
Answer: no