I just bought both a TCL Roku 65" TV and an LG SL4Y Soundbar to listen with. The only connectivity options available is digital optical in/out which I have connected. There seems to be no sign of connection between these 2 devices even though it is clearly connected. The only sign of connection is when I volume up on my TV, the soundbar volumes down. Very confused and would like some answers because this feels a bit dumb when they're both connected.