You raise a few interesting issues, Blondie, at least from my point of view and from my recent experience:
https://www.jehovahs-witness.com/topic/6240050866552832/am-return-visit
I asked the question if I'm a return visit. I presume that is a different designation than "Bible study" or "study". The gentleman didn't really make an appointment to "study" any piece of official WT literature, but just said he'd be back in two weeks. (I'm doing it a bit tough, mood wise, but I hope that by Saturday I'll be more pleasant company again)
This becomes a point of interest because on Friday I actually approached the trolley ministry people, who happened to be in town. Armed with an amicable previous experience, I was able to say that I'd recently been in contact with one of their people (and I was able to give them his name), so with that foot in the door we were able to have a reasonably pleasant chat for five or so minutes.
One of the gentlemen asked specifically if the chap at my door had left any literature with me. I guessed he was establishing whether I was a "study" or a return visit. (Is that correct?) I'm assuming that at this point the return visit is to attempt to set up an actual proper "study". Is that likely to be the case?
I did mention that he had gone out his way to get me a "new" NWT, but paradoxically that is hardly what the JWs would refer to as study material. (Fancy a Bible study based on just reading from the Bible! 🙄 It'd create the situation Blondie quotes from Russell above)