This is NOT an issue to be resolved by the manufacturer of the bluetooth headphones. I have 3 different models of bluetooth headphones from 3 different manufacturers. ALL of them have this issue where there is NO hands free option and in Teams if you don't select the same bluetooth device for Speaker and Microphone you get NO sound and you can't hear the person on the other end. Kinda sucks to have an expensive Yeti microphone and I can't use it.
I am a sysadmin that is trying to resolve this issue for more than just myself. I have 2 identical Lenovo P15 laptops, one running Windows 10 21H1 and one running Windows 11 21H2. All my bluetooth headphones work perfectly with Windows 10 but NOT with Windows 11. I have fought bluetooth issues with Windows 11 since the beginning of testing the very earliest beta version. Updating and rolling back bluetooth drivers does not work. Uninstalling and letting the driver get reinstalled does not work. This is a Windows 11 problem between bluetooth and sound and Teams.