Depends what you mean by “back in the day”? The first period the BBC had the rights, live coverage was usually part of Sunday Grandstand and was more or less lights out to checkered flag (and might be broken into), Substantial pre and post race coverage only came in when ITV took over the rights in 1997. As such “The Chain” was mainly heard for the evening highlights show and races outside of Grandstand’s afternoon slot.
No, not that far back, the last time the BBC held the rights, 8-10 years ago ?
I was in South Africa watching on SuperSport, they carried the BBC's commentary, (and the comment '.
..if you've just switched on for Andrew Marr, he's over on BBC 2.
..', but I don't recall any of their pre and post race punditry ?