I heard from RDQ support that the replacement cable for the DJI camera to the fpv air unit is not the same as the one used to connect to the vista.  I damaged my vista cable and need a replacement.  Can anyone confirm if it is the correct replacement and if not, where can I get the right one?

It's the same connectors, DJI cable is just slightly longer than the Caddx one. I haven't seen the Caddx one sold separately yet.

Is the Vista air unit available for purchase on its own?
Without a camera? I already have a nebula camera.