Selecting Multi View Camera in the Compositor

I have two cameras, two views. I’d like to be able to modify them separately in the compositor.

I cannot use another scene. I cannot output the files. This must be done live.

This is a demonstration I’ve quickly set up. I’d like these two images to be mixed into one. Is this possible?

Quick bump because my post got caught in the spam filter. Any takers? I’d appreciate it a lot.

At the moment I’m considering just using a mirror glossy or something but that’s definitely not ideal. Edit: or even possible…? I don’t know. I’m just desperate.

I want to composite a single image from multiple images generated with multi view. Did you ever figure out how to do this?!

Sorry, no. I gave up. As far as I can tell, it’s impossible.