Based on the Microsoft response from March 23, 2022, they are aware of the problem and are looking into a fix. I'll admit I don't understand how long it takes to create a fix and send it out to the masses, but you would 5 months on one item (bluetooth) should be more than enough time. The problem with text messaging (MMS) with iPhones has a "work around" as long as your willing to use Messages+ (Verizon app) instead of Google Messages.
After months of discussions with Microsoft about my issues, I finally acquiesced and had them send me a new Duo 2 (even though I was confident it is not a hardware problem). Sure as expected, the new/refurbished Duo 2 arrived with the same issues straight out of the box. I have discovered however that if I have my wife turn off her bluetooth (she has the S22 Ultra) it will allow me to stay connected to my bluetooth speaker - otherwise anytime she receives a notification, the speaker dumps my Duo 2 and immediately connects with her S22.
I have created numerous tickets with Microsoft and haven't received any contact from them what-so-ever. Their support team is extremely lacking not to mention lacking in the knowledge of what the problem is and how to fix it.
Kevin