@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.
there's a variation of a maybe 0,25 - 0,5s lag between DTT TV sets all in the same building (I noticed it when I worked on maintenance in a senior home and there was sportsball or something else popular that everyone was watching in their rooms and I was walking down the corridors), but for whole seconds delay thats more likely due to streaming services..
I've always preferred to get my sporting news directly from the ticker tape machine.