It’s pretty simple. I do not hook them together. It’s two separate systems.
So run a PCV valve to one valve cover and then a pan evacuate to each valve cover.
Do not use any breathers. It needs to be a sealed system to work and a breather will just let outside air into the system and you lose your crank case pressure drop.
So it plumbs just like two different systems.
For the separator, the hose from the PCV valve goes to the IN on the separator and the OUT goes to the carb.