I think piecing only happens when there is a commitment to stay and try to work on things.
Your H sounds like he is still confused and therefore is acting inconsistently.
That said, your H may or may not ever come right out and say that he is committed to staying.
I would try not to worry about what stage you are in. Keep focusing on you, and the important 180s and GAL, and enjoy time with him when it happens but don't worry or be unhappy if it doesn't.
Me: 44 H: 44 Kids: 20, 16, 16, and 10 Together/Married: 22 years H announced he was emotionally detached and considering D: 4/4/16 H announced he is going to try to stay and reconnect: 5/1/16