The wife and I hang side by side with a RR and an XLC. We look for a 3 tree set up, or 2 trees, with one of them being a bigger diameter. It works fine.
Sometimes it takes a bit longer to find the right set of trees.
Sometimes it takes a bit longer to set up.
Sometimes I have to rig an extra offset suspension line to create space between the hammocks.
We do not use a separation pole between the 2 hammocks.
The tarp is usually anchored wider or in porch mode on the RR side.
It always works out and we are happy with the set up.