Mysterious icon when pausing Apple TV app

I'm using the TV app on my Apple TV to watch Apple TV+ content. Whenever I **Pause**, Skip Forward, or Skip Back using the Apple TV remote, a strange icon immediately pops up above the playhead. - I have never seen this icon when using other Apple TV video apps such as Netflix or Plex. - I do not seem to be able to interact with the button. Clicking the remote Pauses normally, as if the button was not on the screen. What does this icon represent? How do I interact with it? Why does it pop up when I pause the TV+ app on my Apple TV? ---