Uranus had filled in the blanks quite thoroughly on his own.
Poseidon was preparing to move against God's forces, and William's relationship with Poseidon had always been good.
Most importantly, he believed that a person like William would never engage in meaningless actions.
So, his deliberate visit to the Isle Palace of Delightful Love with Apollo was to signal to Uranus his support for Poseidon, wasn't it?
With Poseidon's people moving against God's forces, didn't that mean William was going to assist Poseidon against the forces under God's control?
Overthrowing the current God!!
And then forming an alliance with the Shapeshifters...
The interpretation boiled down to William allying with Poseidon, the Shapeshifters, and planning to replace God with Jesus, whom he had already subjugated, thus taking control of Catholicism and its followers.