@hyper-neutrino When a question becomes "active" (i.e. by an answer being posted, the question being edited, any answer being edited, etc.), then SD scans the question and every non-deleted answer. If any of the individual posts were recently scanned (currently within one day) and has not changed since then, then that individual answer or question is not re-scanned. In this case,
this answer was newly posted, which would have triggered scanning the question and all answers. So, when
this answer to the question was edited an hour later, only that edited answer would have been scanned.