Issue with AirPod connectivity with Watch app

Hello, Our beta testers have recently had issues connecting their AirPods to the Apple Watch. We have a AVAudioSession in the watch app, and have set up workout etc. regular Bluetooth headphones have no issues and we can see the connection through the AVAudioSession.routeChangeNotification on them, but not AirPods for some reason? Any one with an idea of what may cause this? Thank you

Issue with AirPod connectivity with Watch app
 
 
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