First of all thanks a lot for fully watching the video. For some reason I don't think the space your talking about is the space that he Leo is talking about. Because in the space Leo is talking about you can't even fathom. There is absolutely no thought or cognition of any kind where he was at. There is also no subject and no object. Unless Leo went to the core place of what your talking about. Thoughts?
If there is no cognition of anything as you are implying then there is no way of retelling your experience. I know this is kinda tricky - but how can you be in a place where there is no self-awareness of any kind and then tell about it. It makes no sense. But maybe this wasn't what you were implying. For me the 3d black box - the void - you are still feeling as yourself - I mean you know that you are "somewhere" only that your point of view is expanded so that in a "sense" you have no "boundaries". I do admit that I did not watch the clip. I will look at it and come back with an opinion if there is something that I need to add.