Complex sentence: The film has been called the "most important film made by the National Cinema" and in fact, the sequel was not filmed as long as Alejandro Doria was living, as he did not want to "compete with a myth".
Split into simpler sentences: The film has been called the "most important film made by the National Cinema". The sequel was not filmed as long as Alejandro Doria was living, as he did not want to "compete with a myth".