Once even the subtle level has crossed we tend to reach the state of Prakriti . People might have experienced stages given in 1.44 and 1.45 during meditations though for a very brief period of time. Where we feel we entered into some area which is totally non-explainable. Basically, it is moving from conscious state (Savitarka sampatti) to subconsciousness ( Nivitarka sampatti ) and then the stage of unconsciousness and then cross that stage too in the final one.