One more thing
What you have to understand about any letter that the borg sends elders, be it congregation, HLC, RBC, etc, that there are seminars that put the borgs meaning into the letters.
The letters themselves are bare bones as can be for legal reasons. But the HLC elders do at least one seminar a year to review their responsibilites and how to handle various scenarios. Handwritten notes provide another layer of legal insulation for the WTBTS.
I know for a fact that legal liability is broached, as well as the coaching of the hospitalized JW.