I'm having trouble setting up ARC. The TV is LG OLED CX, in which I have HDMI ARC and Simplink (HDMI-CEC) enabled, HDMI 4K cable, bandwidth 18mbit connected to HDMI 2 (arc) goes to the Onkyo TX-NR636 receiver to its HDMI Out (arc) output. Simplink is also turned on in the receiver. I don't have anything else connected to the receiver, it has to be only for the ARC. I still have a UPC decoder connected to the TV via hdmi 1. Everything is on and I have no sound via ARC, I tried to configure the magic remote to control this Onkyo, during this procedure I write to test the Power and Audio. Pressing the Power button during the connection procedure will turn the receiver off and on, so it's okay, then the Audio button appears, which I press, and at some point on Onkyo changes the sound source to Direct or sometimes writes Dobly Digital, so I click confirm and it's ready. And it doesn't help either. I do not know what I am doing wrong. I had this Onkyo was connected to the LG OLED C8 2 years ago and everything was ok via ARC, maybe something in Webos has changed recently? I also tried other sources, such as Netflix, YT - zero sound. The speakers are connected to Onkyo properly, I can listen to music via Bluetooth or Opical cable, only this Arc is giving me trouble: / Will someone help?