I think you don’t! CeC and eArc are two different things! CEC is responsible for controlling other devices. eArc does allow you to stream lossless audio to your receiver/soundbar. Tv does not stream True HD despite saying so on website. CEC is only basic and does switch to source and let you volume up/down your audio device. With other brands you can control your player/console using Tv remote. It’s missing here. Dunno why as it was working great in my 10 years old Samsung no hassle!