Thanks for bumping this PWE.
So 16 months have passed since I was asking some questions, and let me add that I think Strained Oblique nailed it with his description: "The easiest way to tell if you are a PROSPECT and not a FOLLOW is the telephone. NCAA Recruiting coordinators CALL / TEXT prospects. They DO NOT call follows." That is absolutely right. In addition, his advice to "Always treat silence as a NO" is spot on. That said, even if there is phone/text communication, it doesn't mean you are a RECRUIT. As Coach May noted, "Things are said and done to keep you interested while they buy time on the decision process."
Let me add that being invited for a UV means you're a PROSPECT but it does not necessarily mean you are a RECRUIT. In other words, you very well may not get an offer, particularly if the UV is early in the process for that particular school. See quote from Coach May above.