Aaahh! Yes, we did include a stereo link connection on one of the VC1 models….. I now recall it! The link was a straightforward connection directly into the sidechain and worked fairly well…. but there was always some image drift; the link did not work well enough to make it a feature on later models. I would not recommend using it unless you have plenty of time to experiment, but if you want to try it, just connect a cable between the connectors on the backs of the VC1s.
Sorry for the misdirection earlier….. It was a long time ago! 
