An update: I fiddled with connecting the L-Connect controller to splitters, and a PWM and RGB hub I have and the results are the same: the Lian Li fans are not recognized by the BIOS unless I unplug the USB connection on the Lian Li controller, which kills RGB. When I used the splitter, it actually made my other fans invisible to the BIOS too. Looking closer, I noticed the PWM connector from the Lian Li controller only has 2 pins so I’m assuming it just won’t work without the L-Connect 3 software. Bummer