Will this setup work? Sound through Chromecast ->TV -> Onkyo TX NR-515


Novice Member
So I've just got a new TV (OLED 65 CX) and I've been set on having to upgrade my Onkyo TX NR-515 as it doesn't support 4k. Unfortunately a lot of more modern Onkyo are out of stock and I can't really find another one available in the right price range that i'd like. It's also part of a home automation solution so I need a well working API for it. But then I started wondering if I really need one.

I really only use a Chromecast Ultra as an input to the TV and only need to get 5.1 sound out of the receiver. Could I instead of having to upgrade the receiver plug the Chromecast into the TV and then use the Onkyo only for sound? Through ARC I'm guessing but I'm not really an expert in the field.

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