Anyone managed to run two zwift instances on MacOS?

I am trying to run a second zwift instance on the same macbook to use as a “rear view”. Easy to do it with two different computers but I would prefer doing it with one.

I can run zwift as another user either with sudo su - otheruser then launch the zwift app or with the lauchctl asuser uid zwiftapp --args. I am getting the launcher screen, I can login but then it hangs and never loads the zwift app window.

Has anyone manage to do it?