Question: Are King Vidor and Géza von Cziffra both American directors?

Context paragraphs:
Kauf dir einen bunten Luftballon: Kauf dir einen bunten Luftballon is a 1961 West German / Austrian film directed by Géza von Cziffra.

Third from the Right: Third from the Right (German: Die Dritte von rechts) is a 1950 West German musical crime film directed by Géza von Cziffra and starring Vera Molnar, Robert Lindner and Peter van Eyck.  It was made by the Hamburg-based studio Real Film.

Charley's Aunt (1963 film): Charley's Aunt (German: "Charley's Tante" ) is a 1963 Austrian comedy film directed by Géza von Cziffra and starring Peter Alexander, Maria Sebaldt and Peter Vogel.  It is an adaptation of the British play "Charley's Aunt" by Brandon Thomas.

Kriminaltango (film): Kriminaltango is a 1960 Austrian film directed by Géza von Cziffra.  It was a remake of the 1949 West German film "Dangerous Guests" which had also been directed by von Cziffra.

Peter schießt den Vogel ab: Peter schießt den Vogel ab is a 1959 West German film directed by Géza von Cziffra.

The Flower of Hawaii (1953 film): The Flower of Hawaii (German:Die Blume von Hawaii) is a 1953 West German musical film directed by Géza von Cziffra and starring Maria Litto, William Stelling and Rudolf Platte.  It uses the music of the operetta "The Flower of Hawaii" by Paul Abraham, but the story was rewritten.  Unlike the 1933 film "The Flower of Hawaii", this film is not based on the life of the last Queen of Hawaii Liliuokalani.

The Legs of Dolores: The Legs of Dolores (German: Die Beine von Dolores) is a 1957 West German musical comedy film directed by Géza von Cziffra and starring Germaine Damar, Claus Biederstaedt and Ruth Stephan.

Géza von Cziffra: Géza von Cziffra (] ; 19 December 1900 – 28 April 1989) was a Hungarian and Austrian film director and screenwriter.

So ein Millionär hat's schwer: So ein Millionär hat's schwer is a 1958 Austrian film directed by Géza von Cziffra.

King Vidor: King Wallis Vidor ( ; February 8, 1894 – November 1, 1982) was an American film director, film producer, and screenwriter whose career spanned nearly seven decades.  In 1979, he was awarded an Honorary Academy Award for his "incomparable achievements as a cinematic creator and innovator."  He was nominated five times for a Best Director Oscar, and won eight international film awards during his career.  Vidor's best known films include "The Big Parade" (1925), "The Crowd" (1928), "Stella Dallas" (1937), and "Duel in the Sun" (1946).  (He is not related to fellow director Charles Vidor).

Supporting paragraphs: King Vidor Géza von Cziffra
Answer: no