I am going to take a shot at this... although it may be wise not to, because there are people at this forum that don't like it when people say they are at a certain point.
Also, the definition of enlightenment is so varied, that it is impossible to fit all the ideas about enlightenment that people have, into a single definition. But the basic "I am that" model of enlightenment is what I am talking about.
There are 3 main stages to experiencing "I am that" (enlightenment) that I have experienced. The first are glimpses into "I am that". But once out of it, we go back to being a part of the dream. I refer to these as awakenings. When this happens, there is no turning back... once you have tasted the nectar, there is no un-tasting it.
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Then there is a point when we know "I am that", however we are still very much associated with/attached to the body mind. There is an inner knowing (beyond the mind) that all that is happening is not us, we are just a screen on which it is all happening, however we are still the screen. The screen is still an object on which it is all happening. Now the focus shifts from
wishing "I am that" to
knowing "I am that".
Then comes "I am that". When this happens, there is uninhibited joy. Now the focus shifts from
knowing "I am that" to
being "that". This is the ultimate stage, but not final. Because there is further expansion in every moment after this.
One way to explain this is to say there is an infant, a child and an adult. When we are a child, we cannot become an infant again, but we continue to grow as a child. Then, when we become an adult, there is no going back to being a child, but there is still growing as an adult. Similarly, when there is a
knowing of "I am that", there is still growth but there is no more going back to
wishing "I am that" and then when there is
being “that”, there is still growth, but there is no going back to the stage of
knowing "I am that".
Although I cannot really speak for anyone else, I can say, based on conversations I have had with some other AYPers, as well as posts I have read from them, that there are a few here who have realized enlightenment from AYP in 4-5 years, or so, of practice. Some others among us, I’d say, are really close to enlightenment after 4-5 years of practice, they are just hanging there (“knowing”) by a thread, ready to drop into “being” enlightened. And there are some who have been practicing for a couple of years and are close to, or at, the “knowing” stage, as well; maybe some a little farther along than that.
I hope some others do chime in.