They are not related; in fact, "Kaye" is a pseudonym for both men. Danny's real name at birth was David Daniel Kaminski, and Thorsten's real last name is Kieselbach.
The Madwoman of Challiot (1969); The Five Pennies (1959); Me and the Colonel (1958); Court Jester (1957); White Christmas (1954); Hans Christian Andersen (1952); The Inspector General (1949); It's A...