Perhaps not in such specific terms, but it was observed a long time ago (years) that rated range could go up a few hours after charging completed. I think people have even captured this in visible tesla; the graph does an instantaneous climb.
Yes, it was through Visible Tesla that we noticed it.
The second poster noticed that the time that passed for him was much shorter than it was for me. His car was fairly new--six weeks old, with 1500 miles and mine was about five months old, with about 8000 miles on it. It was the first range charge for both of us.
My point is that I think we're adding a piece to the "what happens during a range charge concerning pack balancing" puzzle, in that it looks like something is happening after all the juice is in (the part you just said was already known, if not in those specific terms), and that that something takes longer the longer it has been (mileage, time, etc.) since the last range charge. (It's this last part that I don't think I've seen anyone identify any where before this.) Having someone who range charges frequently, and also uses VT that could add a data point to confirm this would help confirm the theory. Then those that understand a lot more about the pack balancing, etc. than I do might be able to infer something with that extra puzzle piece.
That's all I'm suggesting.