Just did a quick search and found that teams does in fact support some sort of local-only streaming: https://docs.microsoft.com/en-US/microsoftteams/use-ndi-in

Just did a quick search and found that teams does in fact support some sort of local-only streaming: https://docs.microsoft.com/en-US/microsoftteams/use-ndi-in-meetings https://docs.microsoft.com/en-US/microsoftteams/use-ndi-in-m... I do trust Microsoft to collect all tracking data that's possible at all, but at least there is also a valid use case here. It's even somehow plausible that they would require this permission for any kind of video streaming - to make sure all permissions are present before someone wants to start a locally streamed call.