Has there been any progress with this?
Here's been my experience:
I was using a usb C to USB C cord, with a USB adaptor so I could plug it into the car to use car play. This worked fine for a few weeks. Then it began doing the thing where after plugging in the phone, it would connect to car play, then disconnect, on a never-ending loop. This would happen intermittently and did happen when the phone battery had less than 100% charge.
Per this board, I purchased a Data cable and got one that was USB A to USB C and this worked flawlessly for about a week.
Then one day earlier this week, while I was driving and using car play and my new data transfer cable, the connection dropped for no reason whatsoever. The phone hadn't moved, was still securely plugged in, and the battery was at 100%.
It happened again today though I was able to futz with the phone and get it to reconnect.
Explain it to me like I'm 5 years old because I don't get it. I suppose the cable could be faulty but I highly doubt it.
This is very very frustrating.