On topic 2, what I mean is if background noise cancellation is good enough on the mic so that people in the meeting can hear clearly. 

I use mine in Teams with Windows 11 every day and never have complaints about being heard.

I use mine on Windows 11 everyday also but I don’t use Teams often because my company does not use it (yet).  But I have often joined meetings with other companies that use Teams and have not had a problem.  I do use it regularly with Webex and Zoom and have had good success.

The only issue I have run into is I usually have my ACE connected to both my workstation and my Iphone and sometimes when I get a call on my Iphone while I am also on a call on Zoom, if I accept the call it will kill my connection to the Zoom meeting and sometimes I will have to reset the audio connection on my Zoom call when I jump back to that meeting.

As far as background masking, I have dogs in my office all day everyday and they will sometimes go crazy when workers are outside my house or the doorbell rings, or they will just be playing and I have asked people of they can hear them and they always say no.

Thanks for your answers!!!

Final question: do you use built in Bluetooth dongle or built in pc bluetooth? Reason for asking is that when using apple headphones, one must use a Bluetooth dongle, otherwise every single surrounding sound will be heard on the recipient side in a teams call.

I use the Bluetooth built into my laptop (Surface Laptop 3).  My previous headphones that I used were the Surface Headphones.  I really liked them and they worked great for a long time, the only problem with those was the cushions didn’t last very long and they got very difficult to find replacements, especially once Microsoft stopped making the headphones.  I got the ACE because I have a lot of other Sonos products in my house and I trust them, and they didn’t disappoint.  They aren’t perfect headphones but they are one of the better ones I’ve come across so far.

I use the Bluetooth built into my laptop.  I’ve also used a direct connection via USB.  Both work fine with Teams.