So even the left and right slit of the one photon double slit experiment.
Quote: " Bohm’s ideas involve non-local hidden reality, in which everything depends on everything. In his universe, something happening in a distant galaxy is influencing you right now and vice versa, however minor the effect."
See New scientist article: "Quantum weirdness may hide an orderly reality after all".
The idea is that the parity symmetry between material and anti material entangled copy universes is assumed to be the origin of two interfering photons at long distance.
The left slit in one universe should function as the right slit in the other universe.