Question about Play HDMI Sync Box - 744991

Hello together A somewhat special question. I have bought a new Samsung TV, now I would like to use the Tizen OS operating system on it. However, the sound must be connected via HDMI to an Onkyo receiver, with the Hue Sync Box in between. Does anyone have any experience with this? Unfortunately, I have no experience with it and am a bit confused about how to connect everything correctly or whether it works at all. As the picture itself is not actually transmitted via HDMI but remains on the TV. 😅. Many thanks, LG