How are two minds better than one?

So I just met a fellow Satanist, who’s is interested in Lucid Dreaming and Soul Travel as much as I am, and is an avid meditator like myself.

I understand that two minds focused on the same ritual is significantly more potent then just one, but what about helping each other just develope our skills?

Are there any particular exercises designed specifically for two or more participants to increase communication with nonphysical energies and consciousness? To increase the Lucid Dreaming / Soul Travel experience?