This month, we are excited to release new features and capabilities on Microsoft Teams phones including the People app and raise hands feature to improve parity with your Teams desktop experience.
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Updated Jan 26, 2021
Version 3.0
Blog Post
RobNelsen The Better Together feature does not require the two devices to talk between each other. All communications are handled by the Teams service, as long as both are signed in to Teams with the same user account. Bluetooth is only used to discover the name of the device you wish to connect to, so make sure that BT is enabled on both the computer and phone.
You can read more about how this all works in my latest blog article: http://blog.schertz.name/2021/01/device-pairing-in-microsoft-teams