A note for any engineers reviewing this — variants of this AVAudioSession + CarPlay question have been posted on these forums for 4+ years now without substantive replies from framework engineers: https://developer.apple.com/forums/thread/680151 (May 2021) https://developer.apple.com/forums/thread/664874 https://developer.apple.com/forums/thread/721535 https://developer.apple.com/forums/thread/732202 https://developer.apple.com/forums/thread/759379 (July 2024) The recurring pattern suggests a real documentation gap, and it's becoming more relevant as motorcycle manufacturers ship CarPlay built-in (BMW, Honda, Harley-Davidson, KTM) and aftermarket displays like Chigee proliferate among riders. For motorcyclists, losing handlebar transport buttons mid-ride forces reaching for a touchscreen at speed — this is a real safety issue, not a UX nicety. Any guidance, even a pointer to whether internal investigation is underway, would be appreciated. Happy to provide TestFlight builds, audiomxd logs, or test on beta SDKs.