Bluetooth apps engineer here. Many have touched on why it isn’t widely seen, mainly because of synchronization issues. There are many devices that now have their own proprietary method for handling this. The Bluetooth SIG understands the current limitation and future specification will handle this more gracefully. Particularly, in Bluetooth Low Energy’s implementation (Bluetooth classics younger brother, think sensors and wearables). If you’re interested in more info, here they describe LE audio and broadcast mode – https://www.bluetooth.com/learn-about-bluetooth/recent-enhancements/le-audio/. This will take some years for mass adoption but will handle exactly this scenario.
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