Aziraphale gives Crowley a rather stern frown, the kind that people in cahoots give each other when one's being a tad too obvious. Or one that someone gives their spouse when they're just being a tad too much right now.

"Oh, no, no, not to worry." He addresses Taiki again, with a polite, if awkward smile. "My apologies, we didn't mean to startle you."