Pre and post meeting chat with our customers is a poor experience (ie. for regular private meetings)

John Tropea This is a short answer to a long post 😉 You can control many of these settings. I would say it depends on your Guest access settings, External access settings, Meetings settings (Anonymous join), Lobby settings (who can join and start a meeting but also rejoin without having be let in). etc. Just putting it there, can't be more specific right now.

Adding to my previous post.

- Use Teams Meeting options or Teams Meeting policy to control who can bypass lobby (allow federated, anonymous etc.)

https://docs.microsoft.com/en-us/microsoftteams/meeting-policies-in-teams#meeting-policy-settings---participants--guests

- Anonymous join (anyone with a link can join)

https://docs.microsoft.com/en-us/microsoftteams/meeting-settings-in-teams#allow-anonymous-users-to-join-meetings

- Use OneDrive and SharePoint as storage for Teams meeting recordings instead of Stream (opt-in)

https://docs.microsoft.com/en-us/microsoftteams/tmr-meeting-recording-change

- Comparison of team member and guest capabilities

https://docs.microsoft.com/en-us/microsoftteams/guest-experience#comparison-of-team-member-and-guest-capabilities

- Compare external and guest access

https://docs.microsoft.com/en-us/microsoftteams/communicate-with-users-from-other-organizations#compare-external-and-guest-access