In the (Second) Beginning

As their lunch stretches on Aziraphale slowly comes to realize that Crowley is—enjoying him. Enjoying Aziraphale’s conversation, and company, far more openly than he has in most of Aziraphale’s memory. And Aziraphale knows that he himself is just chattering on, letting conversational tangents carry him along, and—it’s definitely relief, for him, knowing for the first time in a long time that they aren’t being watched, that no one is keeping score for now.

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Aziraphale realizes that Crowley's been saying something rather loudly for a week.