I've been watching some videos of lucid dreaming and don't know too much about it just yet. But one thing clicked in my mind whilst watching these lucid dreaming videos. Now I tried googling this but I couldn't find anything.

Anyway, what if you could co-op lucid dream, say if me and my buddy both decided to lucid dream one night and we both had the same dream, we both could see each other in our dream almost like a multiplayer video game. Or even imagine having a lucid dream and a random person in the world has the same dream and sees you in their dream and you see them?