good one (gasp!) Dude. thank you so much for sharing with us.
once read of two ladies who were on vacation in Europe and the difference between your slipping into this other dimension of time, and theirs, was there were two people involved, to verify to each other what they had seen while there.
it happens. suddenly as they walked, the scenery all shifted from modern to something like horse and buggy days...I'm not sure whether they interacted with the people they saw as the dresses they wore were out of place, so maybe they couldn't be seen, but everything was quite real.
Some would say a label, what you did as Dual Consciousness. I only did this once or twice but it's very vivid and real. Bruce mentioned here once, that he was splitting his consciousness up more than two places, during some classroom seminar, and he was made aware of it.
Monroe was reported to be able to be in several places at once, why am I not surprised?

Interestingly, my guidance factor explains Yeshua was able to be in more places than one, and in the form of his body. I just read about that he could make himself a new body by gathering those particles around him and they would vibrate to denseness according to his will. Also I think he walked on water in this other body, the astral body.
then to compare a bit to your experience (truly amazing!) one day I was discussing, I thought all in my head, just me, myself and I, right? to a person on this board, responding to a post. I remember thinking about the question they had asked. I was on my porch, about ready to respond to the post.
I "pretended" to talk to them. A conversation began. like an interaction. Suddenly I knew what I wanted to say to them in the actual post. I jumped up to go post it without excusing myself from the interaction, lol, after all, I thought I was just talking to myself.
as I opened the screen door and walked to the puter, this interaction continued and I heard myself still talking to them and they were still responding, even though "I" had left the whole scene, I was no longer pretending, and it seemed another me was still talking, but I had no clue what I was saying!
I was just watching that from like peripheral consciousness. Since then I can sometimes hear conversations going on here. I can sometimes hear people's thoughts..I sometimes read my own posts "with them" as they read it. weird, but fun! It's part of this oneness thing.
very interesting that you heard yourself explaining what was happening while it was happening Dude. this phenomenon is also discussed in Bruce's books concerning how Rosalie trained herself to use the recorder when she did explorations.
this has something to do with the subconscious mind and the conscious mind becoming completely merged, so that the "split mind" (explained in ACIM) is no longer split, you become then the observer of a new definition of what reality is, and of "who" you are.
and you sir, have my admiration as a pioneer explorer. love, alysia