Can wemux be used for sharing local sessions between 2 remote hosts?

[vladiibine]

I'm trying to set up a shared session in this setup: I'm on my machine (hidden behind a router), my friend is on another machine (hidden behind another router), and we have 1 host which we can both connect to.

Can we use wemux to share a session on one of our local machines (not the common host) ?