Originally Posted by Tfid
Your AVR is probably detecting the OTA audio signal over the TV's ARC output to the AVR. Not everyone likes to use CEC so the input switching has to be set up using one of those Harmony set ups.
"I see no benefit to connecting any device directly to the display" I gave you some 'benefits' to doing so, but your 'technocentric' views didn't allow you to see them. They may not be good reasons to you, but with my equipment, I have no reason at all to connect to the AVR first. I would rather spend money on a good TV than an over the top AVR. My internet is 10-12Mbps. I can stream 4K HDR on Vudu, but I'm not sure how unless they cut the bit rate drastically, or they just switch to 1080P without letting me know. I doubt I could see any difference anyway without a settings display telling me what I'm watching. Same thing with lossless audio vs 5.1 (especially DTS). Isn't ripping 4K disks a PITA? It was hard enough to update my rips from SD to HD, but 4K rips, forget it. So much hype, so little money and time, alas!
Nope, it's all done by CEC. But I respect that others don't care for it. Again, your own satisfaction is all that matters at the end of the day.
Yes, your Internet speed is marginal at best for 4K. My DSL is 90 Mbps down/10 up, so I can even comfortably stream out from my server to my Roku Stick when I travel. I will also agree that 4K video can be difficult to discern with a screen smaller than 65", which all of mine are. But with HDR it's an incredible change from 1080 SDR. And I disagree about the quality of lossless vs. lossy audio. Yes, standard DTS is good, but DTS Master Audio is better, as is Dolby TrueHD. Add in the height channels (Atmos or DTS:X) and it's a different league. Even with a 5.1.2 setup (as I have in the bedroom) Atmos is noticeable.
I've only purchased a handful of UHD discs, and I don't even have a player. My optical drive in my computer (LG WH14NS40) isn't a UHD drive, but it does support the BDXL format, so it can read a UHD disc. MakeMKV rips each one as easily as it does DVDs or HD Blu Rays. Takes a little longer, which is to be expected. My i5-6400 with 8 GB of ram (Win 10) takes about 1:45 hours to do a typical movie. An HD Blu Ray is just over an hour, and a DVD takes about 25-30 minutes.