Charter companies (Moorings at least) used Covid as an excuse to eliminate in-person chart briefings.
Moorings' briefings were pretty thin on our 2021 charter. For our upcoming July charter they've gone to online chart briefing to be completed by Skipper & First Mate as well as a health and safety briefing to be completed by all passengers.
I haven't reviewed these yet but even after 14 Moorings' charters I always like the refreshers and doing it before we leave home seems to be a less harried way to get the information