Your Pixel phones can now easily connect to two earbuds for simultaneous audio

Android's Audio Share feature now lets you connect to multiple audio devices for simultaneous playback much more quickly.
PCMag

Pixel Phones Get Auracast Support, Can Now Stream Music to 2 Devices at Once

Select Android phones with LE Audio support can also stream music to a larger group by sharing a QR code or using Fast Pair.
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Google Pixel phones can now stream audio to two headphones at once, but there's a catch

If you're a Pixel phone user, you can now finally listen to your favourite song on more than one pair of headphones simultaneously. Google is releasing support for Bluetooth LE Audio with Auracast to ...