Typing with a remote is slow: open the same page on your phone, type there, and carry on on the TV.
On a TV, settings pages have Finish on your phone at the top, and the movie-night lobby has it for the chat and for using your phone as the remote.
The TV shows a QR code and a short code. Scan it with your phone’s camera: the same page opens on your phone, signed in as you. Or open the address shown under it.
Write the review, the chat message or the setting on your phone and save it there. The TV says when the page was opened on your phone.
Press Done on the TV and it shows what you typed.
A link works once, for ten minutes, and only for you. Make a new link gets another one. A phone that isn’t signed in shows the sign-in page first, then goes on to the page.