Pixel Buds Pro 2 support Auracast for sharing music, just not on Pixel phones (yet)
Briefly

Google's Pixel Buds Pro 2 quietly feature Auracast support, enabling audio sharing with nearby devices. However, compatibility is limited to specific devices and pending software updates.
Auracast is an innovative Bluetooth feature allowing users to seamlessly share audio streams without extra hardware. However, both the source device and earbuds must support it.
Currently, Pixel smartphone users can't utilize Auracast with Pixel Buds Pro 2, as the necessary software isn't available in Android 14, but only in Android 15.
The support for Auracast is confirmed, but it is still in early development stages, necessitating specific compatible devices to access this functionality.
Read at 9to5Google
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