AirPod Max only works with Bluetooth - if I turn off Bluetooth and use the provided USB C cable it does not detect the headphones

Hello,

As my title suggests, I recently bought a pair of 2nd gen (USB-C) Airpod Max and can only hear audio when connected to Bluetooth, as soon as I turn off bluetooth the APM does not work anymore and does not even show up as an option under output sources. I am using a mac mini M4 with MacOS Sequoia 15.6.1. Any suggestions?