In organizing the events of Odysseus quest why would the text in The Odyssey - Elpenor be labeled as part of the road of trials?

In "The Odyssey," Elpenor's encounter with Odysseus represents a crucial moment in the road of trials, as it highlights the challenges Odysseus faces in confronting the consequences of his past. Elpenor, a fallen comrade, requests a proper burial, prompting Odysseus to confront themes of loyalty, responsibility, and the importance of honoring the dead. This encounter tests Odysseus's resolve and character, illustrating the personal growth and moral dilemmas he must navigate on his journey home. Such trials deepen the narrative and enhance Odysseus's transformation from a warrior to a more reflective leader.