Complex sentence: The original story has been much analysed owing to its ambiguity; critics disagreed about the extent to which the film was successful in portraying this trait, while academic analyses found the film significantly less ambiguous than the novella.
Split into simpler sentences: The original story has been much analysed owing to its ambiguity, and critics disagreed about the extent to which the film succeeded in portraying this trait. Academic analyses found the film significantly less ambiguous than the novella.