I have in my LG GX OLED TV four hemi ports, the first is connected to Apple TV and the second to Sony HT A9 by earc.
The third is connected to the Playstation 5 and the fourth is connected to Amazon Firestick.
You can’t imagine my daily suffering, sometimes the TV turns off and the rest is works, I had to use four remote control and I worked hard to fix it, then it took a while until it got back.
I can't continue with LG if this bugs is not fixed.