You Can Now Enable Bluetooth On The Stadia Controller
Google has released a tool that allows you to switch the Stadia controller to Bluetooth mode, allowing you to play wirelessly on various devices and services even when Stadia is not running. Once in Bluetooth mode, it’s not possible to switch back to Wi-Fi, but you can play with a wired connection via USB. The tool will be available for use until December 31, 2023.
To switch to Bluetooth, open the tool on Chrome 108 or later and connect the controller with a USB cable.