Aristotle, for one, wasn’t all that impressed by Odysseus’s adventures. In the seventeenth chapter of his Poetics he observes, apropos of the relationship of a story’s “essential” meaning to its constituent episodes, that
the storyline of the Odyssey is not long. A man has been away from his homeland for many years, and Poseidon is always on the watch for him, and he is all alone. Meanwhile, the situation at home is such that his wealth is being consumed by the Suitors, who are plotting against his son. But after a storm-tossed journey he returns, and after revealing himself and attacking them is saved and destroys his enemies. That is the essential; everything else is episodes.