Question: What do Sidney Salkow and Chris Eyre have in common?

Context paragraphs:
Chicago Confidential: Chicago Confidential is a 1957 film directed by Sidney Salkow, starring Brian Keith, Beverly Garland and Dick Foran.  It is based on the 1950 novel "Chicago: Confidential!"  by Jack Lait and Lee Mortimer.

The Golden Hawk: The Golden Hawk is a 1952 American adventure film, directed by Sidney Salkow and starring Rhonda Fleming and Sterling Hayden, based on the novel of the same name by Frank Yerby.

Chris Eyre: Chris Eyre (born 1968), an enrolled member of the Cheyenne and Arapaho Tribes, is an American film director and producer who as of 2012 is chairman of the film department at the Santa Fe University of Art and Design.

The Lone Wolf Takes a Chance: The Lone Wolf Takes a Chance is a 1941 American drama film directed by Sidney Salkow, which stars Warren William, June Storey, and Henry Wilcoxon.  Salkow also wrote the original screenplay, along with Earl Felton, and the film was released on March 6, 1941.  It is the sixth Lone Wolf film produced by Columbia Pictures, and the fourth appearance of William as the title character Lone Wolf.

Robbers' Roost (film): Robbers' Roost is a 1955 American Western film directed by Sidney Salkow and written by John O'Dea, Sidney Salkow and Maurice Geraghty.  The film stars George Montgomery, Richard Boone, Sylvia Findley, Bruce Bennett, Peter Graves and Tony Romano.  It is based on the novel "Robbers' Roost" by Zane Grey.  The film was released on May 30, 1955, by United Artists.

The Lone Wolf Keeps a Date: The Lone Wolf Keeps a Date (1941) is the sixth Lone Wolf film produced by Columbia Pictures.  It features Warren William in his fourth appearance as the title character Lone Wolf, and Edward Gargan, Lester Matthews and Don Beddoe as the film's antagonists.  The film was directed by Sidney Salkow and written by Salkow and Earl Felton.

The Murder Game (1965 film): The Murder Game is a 1965 British crime film starring Ken Scott, Marla Landi, Trader Faulkner, Conrad Phillips and directed by Sidney Salkow.  The film was distributed by Twentieth Century-Fox.

The Great Sioux Massacre: The Great Sioux Massacre is a 1965 Revisionist Western film directed by Sidney Salkow in CinemaScope using extensive action sequences from Salkow's 1954 "Sitting Bull".  In a greatly fictionalised form, it depicts events leading up to the Battle of the Little Bighorn and Custer's Last Stand.

The Lone Wolf Meets a Lady: The Lone Wolf Meets a Lady is a 1940 American drama directed by Sidney Salkow, starring Warren William, Eric Blore and Jean Muir.  "The Lone Wolf Meets a Lady" was the third entry of nine in the Lone Wolf series starring Warren William as Michael Lanyard.  The film also introduces a sidekick for Lanyard, his bumbling valet Jamison, played by Eric Blore.  Blore would play Jamison in seven more films.

Sidney Salkow: Sidney Salkow (June 16, 1911 – October 18, 2000) was an American film director (more than 50 motion pictures), screenwriter, and television director.

Supporting paragraphs: Sidney Salkow Chris Eyre
Answer: American film director