If the 2.4 GHz USB-C low-latency dongle is powered-on and within range, the earbuds will always favor a connection to the 2.4 GHz low-latency dongle over Bluetooth. If this happens, you will have to switch to Bluetooth mode by long pressing the button on the 2.4 GHz USB-C dongle for 3 seconds. Once the mode changes, you’ll hear an audible notification.