Good, upvoted - your hypothesis is interesting. I tend to think of type 1 as the cognition/pattern recognition/thinking operation and type 2 as a way of sequentially combining type 1 sub-results. The sequentially operation involves working memory and therefore passes through consciousness and is slowed down. As soon as a group of type 1 operations fine-tune themselves to the point of not requiring working memory, they no longer generate type 2 operations.