[Stuart]

Dave Ja Vu is rarely mentioned verbally, so doesn't really change anything. Apart from an added U.

CAs don't mention the +1 channels for various reasons.

Why include "If you don't want to watch this now, go to channel xxx to see it in an hour"?

You'd then have to record separate ones for the repeat channel, which would defeat the objective of just having it on a direct replay. The +1s are also not available on all platforms all the time.

The name 'Dave ja vu' for the +1 service was always intended as a very clever extension of the whole "witty banter" concept for the channel.