In my relationship with my ENFJ spouse, our intuitive knowledge of each other took us right up to the point at which we moved in together (year 5). Since then we have had to be more intentional about building our relationship, of course, but the facts we exchange are more in the service of the relationship itself than in the interest of getting to know each other better. We know each other well through intuition already, and continue to learn about each other more through observing and processing than through deliberate discussion of Who We Are.
Two thoughts on that: it's easier for us to intuit about each other than to give each other lists of important info (this is only a slight exaggeration of what I envision when I read "factual exchange"), in part because it's a dominant function to intuit, but also in part because we often don't know all our own ways and means for certain. I often have a hard time knowing the ins and outs of my own feelings and motives, but can see them accurately as they're reflected back to me by my intuitive partner.
The other thing is, as @Reverie said, the holistic picture of who this person is and where they're going is a lot more important to me than the nitty-gritty of domestic life, which is the area in which most of my relationship's factual exchanges have occurred. Of course it's good to know how best to accommodate each other and not drive each other nuts, but that's about as far as the facts go for me.
I only have a romantic perspective to share, though, as I can't think of any close friends who are NFs. I'd be interested to hear someone else's thoughts from a friendship perspective; maybe it's different.