I have a crap old TV and my mates all have swanky smart ones. But the smarts mean they are 20-90s behind live matches. So in the group chat I am a genius with my comments because I see the future.
@fesshole That delay is down to how they're watching, not that they're necessarily using a smart TV.
Watching DTT (via an aerial, aka Freeview) on a smart TV isn't significantly more delayed than watching it on a dumb TV. Watching anything from a streamer (iPlayer, NowTV etc.), however, will be very delayed.