Is a "mid-chain" video return signal possible..?

…is there a way to send/take a video signal from somewhere within an effects chain that is neither ‘Pre-’ or ‘Post-’ but somewhere in between?

I still haven’t fully got my head around routing in Videosync, but I’m imagining something like an ‘Ext out’ function that can pull a signal from a chosen point in an effects chain and route it to a return track. Is this possible?

No, not really. Routing generally follows the same rules as audio. What you could do is stop adding effects at the point where you’d want to tap the signal from, add another track, set the output of the first track to be the input of the new track, and continue adding effects there as you normally would.

thanks. I think I’ve worked out how to do what I want using a Group/Rack which will show up as a routing source in addition to the usual pre/post/mixer options.