I was going to post this in the cosmology chat, but figured it belonged here more than there. First I want to take two black holes of equal mass and then place them so that their event horizons are touching (or just overlapping - I'm imagining two spheres placed next to each other). Now what happens to a single photon (particle of any type will work) shot between these two black holes, what hole does it go in? Would it be entirely random? If you shot a stream would would half go in one and half go in the other? What happens if event horizons of black holes overlap?