Apple Watch Series 6 not ringing on incoming calls

I have an open case with Apple Enterprise support on this issue for the last few weeks. They have pulled diagnostic logs from my phone and watch multiple times. They seem eager and willing to find the issue. In my experience in troubleshooting this I feel it is vehicle specific. I have a 2020 Hyundai Palisade with wired CarPlay that has the problem. My older Nissan with an aftermarket CarPlay receiver has no issues. For me, the issue occurs only when I cut the car off and open the door so the infotainment system then shuts off "before" I pull the lighting cable, about 90% of the way I do it. If I pull the cable from my phone before CarPlay shuts off I NEVER have the issue. I have tested and tested this so many times I've lost count. I think it has something to do with the way the vehicle is sending a disconnect or maybe not sending the disconnect command to the phone so perhaps the phone still think it's connected to CarPlay in some way. Rebooting the phone resets this. This would explain why it doesn't happen to everyone. For the wireless CarPlay users if you turn off WIFI before you shutoff your vehicle do you still have the issue? I think there have been several posts that this was proven true. For you wired folks like me, if you unplug the lightning cable before your CarPlay turns off does your watch ring normally every time? I am sending more diags to Apple once I get home today as requested by Apple Engineers. I am very hopeful we are getting to a resolution with this.