Kab? Kyoon? Aur Kahan?
Kab?
Kyoon?
Aur Kahan?
is a 1970 Bollywood mystery film directed by Arjun Hingorani.
The film stars Dharmendra, Babita and Pran.
It is inspired by the French classic film Les Diaboliques( film)( 1955), including the bathtub scene.
Ben Cura
Ben Cura( born 30 September 1988) is a British- Argentine actor and director of film, television and theatre.
The Berliner (film)
The Berliner( original title Berliner Ballade, also known as The Ballad of Berlin) was a 1948 motion picture, adapted by Günter Neumann from his cabaret, directed by Robert A. Stemmle, and starring Gert Fröbe in his first leading role.
It offers a satirical portrayal of life in Berlin in the aftermath of World War II.
Jason Moore (director)
Jason Moore( born October 22, 1970) is an American director of film, theatre and television.
Robert A. Stemmle
Robert Adolf Stemmle( 10 June 1903 – 24 February 1974) was a German screenwriter and film director.
He wrote for 86 films between 1932 and 1967.
He also directed 46 films between 1934 and 1970.
His 1959 film" Die unvollkommene Ehe" was entered into the 1st Moscow International Film Festival.
He was born in Magdeburg, Germany and died in Baden- Baden, Germany.
Brian Johnson (special effects artist)
Brian Johnson( born 1939 or 1940) is a British designer and director of film and television special effects.
Peter Levin
Peter Levin is an American director of film, television and theatre.
Ian Barry (director)
Ian Barry is an Australian director of film and TV.
Arjun Hingorani
Arjun Hingorani( 15 Nov 1926- 5 May 2018) was an Indian Bollywood director, producer and actor.
He launched Dharmendra and Sadhana Shivdasani in Indian cinema.
His other major contribution to Indian cinema was making the first Sindhi film titled Abana in 1958.
Hanro Smitsman
Hanro Smitsman, born in 1967 in Breda( Netherlands), is a writer and director of film and television.

Question: Do director of film Kab? Kyoon? Aur Kahan? and director of film The Berliner (Film) share the same nationality?
Answer: no