William was not very familiar with the situation in the Divine Realm, but he thought that it would not have changed much from the era of the gods.
Delmar said, "There's no need for your help in dealing with Zeus now. What we need to do is join forces against Odin, the Shapeshifters, and other powers."
When Zeus's plan to unify the gods began, William destroyed the world, leading to the failure of all Zeus's schemes.
All the powers had to rebuild in the Divine Realm.
Poseidon and Zeus, while not exactly reconciled, only engaged in minor skirmishes, never escalating to an outright fallout.
On the other hand, Zeus saw through the hypocrisy of Hel and Loki, who would occasionally visit Hades to catch up.
Thus, Zeus wanted to join forces with Poseidon to confront the Norse gods.
Poseidon had little trust in Zeus. Now without his Trident and other divine artifacts, if he were to be tricked again, who knows if he could resurrect once more?