Apple’s upgrade to its original AirPlay audio/video streaming protocol, AirPlay 2, lets you choose multiple audio destinations while listening to audio playback, like music or podcasts, or streaming video. However, some people have found there’s a catch: when they use the AirPlay selection dialog in iOS, iPadOS, macOS, or tvOS, they cannot select multiple devices. What gives?.

AirPlay 2 requires that all devices selected are also AirPlay 2 destinations–they must be up-to-date and compatible.
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