Ok I literally JUST woke up for the day and this is what was in my brain: the gomens brainrot runs deep. I have to write it out and I shall from the coziness of my bed on a rainy morning :D This is gonna be a longish one!
Been thinking about this thanks to @vidavalor's post. As a fandom we know that Crowley and Aziraphale always position themselves the same way: Zira on the left, Crowley on the right (from our pov).
But wait! What about that final scene at the Ritz? It ends with a zoom-out of the two continuing their conversation: From Behind.
Why did they film this perspective? It's odd given that the rest of the scene is shot from the other direction. It breaks the 180-Degree-Rule, which is a "rule" in filming that prevents confusion for the viewer about where the characters are and what the action is in the scene. If there's an imaginary line between two characters, the camera cannot pass over that line when filming because then the pov changes.
This zoom-out is an example of a "Reverse Cut", it's literally the opposite of what we've seen for the rest of the scene. So why? They could have zoomed out from the table in the other direction, maybe sending the camera through the window for a cool effect.
This is shot this way on purpose. This is like a private viewing for the audience. We aren't in the audience's position anymore, we're in Crowley and Aziraphale's position. The two continue their conversation, which we cannot hear, so it's still a private moment for them even though we're getting a glimpse of it.
I have to go back and watch again to really find examples but I think this is the scene that confirms the idea that when in private, Crowley and Aziraphale break their position rule (whether through them physically moving, or by way of the camera and how the scene is filmed), implying that it is something they do for public appearance. Like with this scene, they're still obviously sitting down and in the same place, but now the audience is welcomed into their pov for a moment. We are now part of the positioning outwards to others.
@vidavalor wrote about a footstool near the couch in the bookshop that would put Crowley on the left (in our pov), and that's one of the earliest scenes in the show between the two of them where they are completely in private. Here are some more examples I can think of off the top of my head/ what gifs I could find to use xD
Calling out specifically any time they're in the car; Aziraphale never drives, so Crowley is ALWAYS on the left (our pov), and it's always a private moment between them, no one else around. Look at the scene where they arrive at the hospital and how they get out of the car. They both specifically walk to re-position themselves on the "proper" side. (I can't find a gif of the whole bit but this scene here:)
This scene also has a brief bit where they switch positions again; they're reminiscing about a personal memory, 1941 and the magic show (even though the audience wasn't aware of it yet before s2).
Actually the whole bit at the hospital is very involved with camera angles (it would merit its own post at some point for sure.)
Calling out the Wall Slam™
Crowley on the left, Aziraphale on the right, UNTIL they are interrupted by someone else and the scene is no longer private, and the camera flips position for the rest of the scene.
Also Rome. Oysters. This one's odd, there are two very brief reverse cuts in this scene.
And lastly, this key shot of them going to their respective offices. This one stands out to me because it's not a "private" moment between them, but it shows that their "public" position matches how they have to arrive at Heaven and Hell. Aziraphale and Crowley actively go out of their way to position themselves relative to one another in public in such a way to face Heaven and Hell. And in this shot, we get to be a part of their pov. We get to be on their side.
