Well by Alan Chapman his implication was that reaching the very first stage of the progress to insight would commence the process of KCHGA and that would (in my vocabulary) make me partially enlightened. Basically the experience is something like this: Your meditating and watching your breath and your sitting and waiting for something to happen, your waiting, and waiting, BUT as soon you notice your waiting, OR sort of locate your self (as in your very being) and objectify it for the first time then a sort of shift occurs (when you objectify your self for the first time) and the meditation really kicks off. It was a pretty cool insight. It was required IIRC to occur every time one meditated. The other one by Buddhaghosa and Pali Commentaries, there's lots of discrepancies so I'll just describe the next two stages. The Cause and Effect stage, well basically what happened was when I noted something, because I noted something something would happen and then I would note that (and then I would have an endless supply of objects to note) and it would get so fast as the stream of.... well whatever just really sped up, and then when I couldn't individually note each thing and the meditation became really frustrating, wacky and screwy with your head then I considered myself to reach Sammasana Nana. So it's sort of iffy for which Nana you have to reach or pass for Buddhaghosa, but it mostly has to do with the Paccaya Parigraha Nana (cause and effect), so since I diagnosed myself as reaching sammasana nana I would technically meet that requirement. The irony is that I use to Daniel Ingram's criteria to diagnose the nanas and he has crossing the A&P event (something about the 4th nana) as really commencing the process. Oh well. I also never diagnosed myself as being partially enlightened during the time I was actually practicing this meditation (I practiced it only very little) it's only several years later that diagnosed this (or misdiagnosed this).