Three physicists got Nobel Prizes for their work in quantum entanglement. If there is quantum entanglement of particles, there is the possibility of exact duplicate universes quantum entangled if the quality of infinity exists. All exact duplicates, down to the bit, including exact duplicate universes, would have to be quantum entangled top to bottom to be, and to remain being, in all of an infinity of them exact duplicates. If an immortalized infinitized traveler left his home universe, all of the infinity of him would leave his home universe (traversing universes) at precisely the same time in the precisely the same direction of leaving. If, perchance, in an infinitely long travel he came upon an exact duplicate of his home universe as he once knew it to be, the infinities of him would not know it to be any such thing. In all of an infinity of universes, because they -- all of them without exception -- would be quantum entangled, Though an infinity of infinities within infinities, it would for all intents and purposes be his one, single, home universe. And he in all his infinity of exact duplicates, just one of himself due to the quantum entanglement of exacting duplicates to just one.
Not that division in paths do not occur, and not that every entity, including us, will not take all of an infinity of paths in space and time, dividing path-wise and being-wise into an infinity of universe paths. If any particle will travel untold many particle paths always and at once (probability), so will we . . . so will our universes. The Universe of universes, or the Multiverse, will have it both ways to every which way, including an untold many more dimensions than just the superficial four we settle for.
Not that division in paths do not occur, and not that every entity, including us, will not take all of an infinity of paths in space and time, dividing path-wise and being-wise into an infinity of universe paths. If any particle will travel untold many particle paths always and at once (probability), so will we . . . so will our universes. The Universe of universes, or the Multiverse, will have it both ways to every which way, including an untold many more dimensions than just the superficial four we settle for.