Idk

Something was bothering me, so I just went back and watched the ending like actually 30 times and I am fully 99.999999% certain they switched places

As they're pulling away after the kiss, they lock eyes and Aziraphale's expression shifts in the teeniest tiniest way, like a confirmation glance, before they shift back (and Michael Sheen is a master, so no chance it's not on purpose)

(Like really, go back and watch how Aziraphale's expression shifts literally *a second* before "I forgive you" cuz the change is SO minute, but entirely different emotionally.)

Aziraphale's hands -stay by his sides- after that, he doesn't clasp them at all, and it's particularly noticeable while he's walking to the elevator with Metatron.

The Bentley only ever plays other music for Aziraphale, but also Crowley drives away slowly, but ALSO Crowley's collar is fully turned down but you -can- see bits of the red underside in several scenes (particularly before he changes in heaven), but you don't see it -at all- after the kiss

And Aziraphale's face IS weird in the elevator like everyone says, BUT. after going back and watching both, I'm pretty darn sure that's cuz it's Michael Sheen's Crowley, it's the SAME as during Aziraphale's trial in season 1.

Because at first Aziraphale is clearly devastated that Crowley is gone. He brings up his trembling hands and touches his lips tenderly like how Crowley had kissed him. He’s trying to push that feeling of Crowley’s lips into his so he won’t forget. He didn’t pull away. Crowley did. He wanted that kiss to last as long as possible

But then we see his face harden, and he takes his hand away almost violently. He doesn’t just take it away, he wipes Crowley’s kiss off his lips

That look of anger on his face right after. “How dare you do this now, Crowley. How dare you come to me like this. How dare you do this to me.”

He has to have resolve, this has to work because he just gave up Crowley for it. And by god it has to be worth it. That anger on his face is saying “I’ll show you. You could’ve come with me. We could’ve been happy. This is your fault, Crowley. I’ll show you”

All the while Crowley waits for him and gives him every chance to turn around. He waits for him until the elevator leaves the ground. Only then does he drive off.

Because at first Aziraphale is clearly devastated that Crowley is gone. He brings up his trembling hands and touches his lips tenderly like how Crowley had kissed him. He’s trying to push that feeling of Crowley’s lips into his so he won’t forget. He didn’t pull away. Crowley did. He wanted that kiss to last as long as possible

But then we see his face harden, and he takes his hand away almost violently. He doesn’t just take it away, he wipes Crowley’s kiss off his lips

That look of anger on his face right after. “How dare you do this now, Crowley. How dare you come to me like this. How dare you do this to me.”

He has to have resolve, this has to work because he just gave up Crowley for it. And by god it has to be worth it. That anger on his face is saying “I’ll show you. You could’ve come with me. We could’ve been happy. This is your fault, Crowley. I’ll show you”

All the while Crowley waits for him and gives him every chance to turn around. He waits for him until the elevator leaves the ground. Only then does he drive off.