I read in Astral Projection and the Nature of Our Reality that when we AP, it is not an actual 'body' leaving our physical body as many think. It's just that your primary consciousness is being shifted or "projected" to another dimension. Implying that our brain does in fact exist in all realms simultaneously, but the realm that you are "in" depends solely on which one has your attention at the time. Pulling information from Astral Dynamics, it is possible to have your attention in multiple dimensions at one time, which explains the sense of duality that some projectors have, i.e. having 2 totally unrelated set of memories and experiences for a single time period.
So in my opinion (which is largely shaped by the materials that I read/things that I study) there are no separate "bodies" there are only separate levels of consciousness. Astral Projection is simply the projection of your awareness to a dimension other than the one you are "native to".
So in my opinion (which is largely shaped by the materials that I read/things that I study) there are no separate "bodies" there are only separate levels of consciousness. Astral Projection is simply the projection of your awareness to a dimension other than the one you are "native to".