You will note the warning message Garmin provides when you pull up
and ILS approach.

Yes, and I consider it to contradict what the manual says. The note
says for "monitoring" only, insinuating that approach guidance needs
to come from the underlying navaid at all times.

That's part of the reason I asked the question. I have difficulty
explaining away the inconsistency between the note and the
permissiveness of the manual.