I believe the vario cross-talk problem involved large capacity units that used .45 L bottles. I’m running an SN-10 and aa Borgelt 300 that both have small internal capacities on a single total energy probe and I see no cross-talk between these units.
Hope this helps,
JJ

I’m dealing with a Sage and the .45 bottle. I know about splitting the line further back, I’m just curious about how the KWEC works? I know it has a diaphragm I can’t think it through. If it actually works well, it could be a more elegant solution.