I admit that I have thick wrists. That said, I call Siri on my Apple Watch by chance. Every time I do, it takes over AirPods mine (which otherwise plays sound from my iPhone). The effect is so much, in fact, that my music or podcasts start playing iPhone speakers for a while.
I run iOS 13 beta and watchOS 6 beta. Is this something new with the beta? Or did I change something by accident? Has anyone else seen it? More importantly, does anyone have any idea how to STOP it?