The gods in The Odyssey are not distant decoration. They delay, protect, arbitrate, punish and translate human actions into consequences. Poseidon turns the sea into revenge; Athena turns intelligence into protection; Zeus keeps the frame in which debts are paid.
Reading them together prevents the story from becoming a simple adventure catalogue. Each divine figure gives the journey a different pressure: anger, mediation, appetite, law, seduction, strategy or the fragile possibility of return.