The Atomic Submarine is a 1959 independently made American black-and-white science fiction film, produced by Alex Gordon, directed by Spencer Gordon Bennet, that stars Arthur Franz, Dick Foran, Brett Halsey and Joi Lansing, with John Hilliard as the voice of the alien.
 The film was distributed by Allied Artists Pictures Corporation.
Spencer Gordon Bennet (January 5, 1893 – October 8, 1987) was an American film producer and director.
 Known as the "King of Serial Directors", he directed more film serials than any other director.
Sir Alexander Korda (born Sándor László Kellner, 16 September 1893 – 23 January 1956) was a Hungarian-born British film producer and director.
 He first worked in Hollywood during the transition to "talkies", from 1926 to 1930.
 The change led to divorce from his first wife, popular Hungarian actress María Corda, who could not make the transition because of her strong accent in English.
Brave Warrior is a 1952 Technicolor western film, directed by Spencer Gordon Bennet and starring Jon Hall and Christine Larsen.
 The story is based on events of the War of 1812 and the Battle of Tippecanoe, but contains historical inaccuracies, mainly in that Tecumseh sided with the Americans and not the British.
Night Alarm is a 1934 American drama film directed by Spencer Gordon Bennet and starring Bruce Cabot as a down on his luck reporter, Hal Ashby, who tries to make a name for himself by investigating a series of bizarre arson attacks.
 The film, which was a hit in movie theatres at the time, is now widely available in the public domain.
The Bounty Killer is a 1965 American Technicolor Western film directed by Spencer Gordon Bennet and written by Ruth Alexander and Leo Gordon in Techniscope.
 The film stars Dan Duryea, Rod Cameron, Audrey Dalton, Richard Arlen, Buster Crabbe and Fuzzy Knight.
 The film was released on July 31, 1965, by Embassy Pictures.
Avenging Waters is a 1936 western starring Ken Maynard, Beth Marion, Ward Bond and John Elliott.
 It was written by Nat Gatzert and directed by Spencer Gordon Bennet.
Across the Plains is a 1939 American Western film directed by Spencer Gordon Bennet and starring Addison Randall, Frank Yaconelli, and Joyce Bryant.
 Written by Robert Emmett Tansey, the film is about two brothers who are separated when they are young and who meet again as adults, one good and one bad.
They Raid by Night is a 1942 American low-budget World War II film from Producers Releasing Corporation, directed by Spencer Gordon Bennet.
Requiem for a Gunfighter is a 1965 American western film, the last picture directed by Spencer Gordon Bennet, produced by Alex Gordon, and starring Rod Cameron, Stephen McNally, Mike Mazurki, Dick Jones, and Olive Sturgess.

Question: Alexander Korda and Spencer Gordon Bennet, have which mutual occupations?
Answer: film producer and director