If your car has a CD changer in the frunk, there are modules out there that you can plug into the fiber optic ring which emulate the CD changer as an AUX input.
If you have bose but no disc changer (somehow?) you would need to have the interior module coded for it via PIWIS / Durametric.
With one of those, you usually just select Disc 6 and that is your aux input. I have an aux to Bluetooth adapter for audio streaming and it works way better than the FM tuners that I tried. My car came with an old, long-discontinuned NAV-TV unit, but there are others available like this one: https://www.amazon.com/Bluetooth-Handsfree-Adapter-Interface-Porsche/dp/B07PM28RRC