Are Tadeusz Konwicki and Danny Leiner both film directors ?
Tadeusz Konwicki Tadeusz Konwicki (22 June 1926 – 7 January 2015) was a Polish writer and film director, as well as a member of the Polish Language Council.
Robert Ozn Robert Ozn (born Robert M. Rosen, New York City), records under the name DaDa NaDa; Broadway credits as Robert Rosen; personal nickname OZN, (pronounced "OH-zen") is a Top Five Billboard recording artist, award-winning screenwriter, producer and Broadway actor, being the vocal half of 80s synthpop duo EBN-OZN; his solo act, Dada Nada; and for his later work as co-producer and co-writer with Colin Greene of the human-rights themed feature film "I Witness" starring Jeff Daniels, James Spader and Portia de Rossi.