Pope had not fully accepted Russell's invitation after all.
This was actually quite normal.
Rather, if he had immediately defected to Russell's side, Russell would have doubted his sincerity.
That was a century-old obsession.
Having brainwashed himself with the highest level of the "Divine Descent Device" and transformed into a digital life form similar to a Monkey-faced Eagle, how could he believe on Russell's mere word that there was a better, all-solving solution and immediately set aside his plans?
Even Russell himself did not expect the Pope to become an ally immediately.
What he truly wanted to do was to tell him those secrets... about the "Dusk Egg," about the "giant dragon," about the "Gray Dome."
This was the knowledge that His Holiness had not known before solidifying his "salvation plan."