Ruku device

I have both the Oppo 105D and a Newer 4k Smart Samsung TV -I'm looking at buying a new Ruku device and wondered if it's best to attach it to my Oppo player (as I've seen others do) or attach it to my Smart TV. Does it matter which way I go? Thanks for your help!
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your oppo can already stream netflix and most other popular apps (other than amazon), and your samsung should do likewise--i'm not sure why you need the roku.