From what I've read so far it seems like I might have made it farther than anyone else here. I've been working with Apple engineers off and on for the last 3-4 months. I've been giving them a list of different devices of what does and doesn't work with my iPhone 11 Pro Max. It started with my Uconnect in my 2014 Dodge Dart, and from there has been a series of headphones, and other devices. I noticed that a majority of them aren't MFi certified, but that doesn't play since the Uconnect system is.
At this point from what I gather, it seems that in the iPhone 11, and I'm not sure if it's just the Pro version or not, Apple used a custom Bluetooth chip created in house by them. This may or may not be tied to the WiFi and the new "U1" chip for localized indoor localization mapping. They might be working on a firmware update for it, but at this time running the beta for 13.4 beta 3 it doesn't look like it's on their radar.
I traded in a perfectly good phone, for this frankly broken phone. I feel ripped off, and frustrated. I can't make phone calls in my car any longer something i've been able to do for the past 20 years. I started using an old iPod for music since my headphones disconnect regularly during runs. The media doesn't seem to know or care about this issue that is literally affecting thousands of people, and no one at Apple is accepting blame. This quite frankly makes me sick.