I have the Lian Li SL-INF. I made sure to buy the single pack as it contains a cable that splits into aRGB and PWM. You can still diasy chain but these cables are important to achieve what you want to achieve. I use an Octo to control the fans speed and pump speed based of the water temp probe in the High Flow 2. I connect the aRGB to the Farbwerk 360. The setup works well but I am looking for an RGB controller that plays nice with OpenRGB or SignalRGB so I plan on selling my Farbwerk if and when I find something better. Hope this helps.
Signal RGB can control a FW360 but you have to stop the Aquasuite service to do it. They do it through the Ambientpx function. Here is a
LINK to how to set it up. I have not tried this personally. I have 2 FW360 in my rig and I use OpenRGB to control the LEDs in my mobo, RAM, and GPU. I wish there was a way to control everything from one program. Signal RGB could be the solution, but I use Aquasuite to monitor and control my loop components. I am not willing to give that up for consolidated RGB control, but it is an option.