Microsoft is constantly testing new features for Xbox through its Insider Program, and the company has just added new HDMI-CEC features that make it so you can control your Xbox Series S|X consoles with a TV remote.
With the update, you can navigate around your Xbox console's dashboard and control streaming apps like Netflix, Hulu, and Twitch without needing to power on your Xbox controller. Instead, you can just use your TV's remote, assuming your TV supports HDMI-CEC technology.
Going the other way, you can also have your TV automatically switch to your Xbox's input by pressing the Xbox button on your controller. It's a small thing that makes hopping into a game a quicker process since you won't need to flip through inputs every time you turn on your Xbox.
You'll need to be a member of the Alpha or Alpha Skip-Ahead Insider branches on your Xbox if you want to take advantage of this feature right now. To enable it, you'll have to head to the HDMI-CEC settings part of your Xbox and enable the new features.
While Microsoft is testing these features with Insiders, we'd expect to see these additional HDMI-CEC controls come to all Series S|X consoles at some point in the next few months, but we'll have to wait and see.