I have tried meditation a few select times and over two sessions in the same year, I had the same experience. I found that I was in some sort of odd state, neither asleep nor awake. I did not have any recollection of my body. But my thoughts were strikingly aware of reality. I felt an overwhelming connectedness to essentially everything. I googled for the sensation and the closest match I could find was an Hindu word: turiya. I have no experience with this domain and have felt actually quite lost since I have never encountered anyone who had a similar frame of reference. It was quite overwhelming and has not happened but those two times. I do not indulge in any narcotics or mind altering drugs. Very unusual experience.