Q-Symphony on QN90C and Q990C

[CSPCB]

I have a QN90C tv and a Q990C soundbar. 
My goal is to use QSymphony to help enhance voices without degrading the low sounds (which happens with voice amplification features)

I have a Philips Hue Sync box connected to the soundbar using HDMI pass through to the TV. 
the sync box has Apple TV, PS5 and Switch connected to it for lighting effects around the TV. 

The only way I can get audio and video is if I change the TV input to “external device with soundbar” and when I select “tv+soundbar” there is no audio or video. This is what is preventing me from using Q-Symphony. 

how can I get this to work? If I use optical I fear I’ll lose audio quality altogether. I’m wondering if it’s the hue sync box. I could purchase the app on Samsungs portal and eliminate the box but it’s $300 (same price as the sync box) so if I don’t have to I don’t want to. I fear this is the source of the problem. 

anyone else have experience with this setup?

thanks in advance.