Complex sentence: The film closes on Benchley and his wife driving home; she harangues him for failing to sell the movie and that by dilly-dallying, Benchley missed his chance to sell the rights, with Disney having already produced a film.
Split into simpler sentences: The film closes on Benchley and his wife driving home. She harangues him for failing to sell the movie and that by dilly-dallying, Benchley missed his chance to sell the rights, with Disney having already produced a film.