Opting into live shows is nothing new at all - the BBC could easily have filled a bit longer in the North West to give a smooth opt to The One Show, while the One Show could easily have kept an eye on events in the NW to ensure any opt was done at the appropriate time.
What made it worse was there was no break between the two - it just crashed to the middle of a report as if something had gone wrong..
Exactly.
It's essentially the same sort of situation as BBC Oxford News handing over to South Today at around 18:40. Both programmes are likely to be simultaneously slightly ahead/behind of their respective "on paper" running-order timings, due to nature of being live – and therefore out of synch with each other for naturally arriving at the opt-in moment simultaneously.
The Oxford presenter therefore often has to briefly "fill" with generic guff (e.g. a quick plug for the BBC Oxford local radio station, or similar), if South Today is, say, mid-report at that moment. The Oxford presenter is presumably instructed to have finished ad-libbing and have said goodbye to viewers at least, say, 4-seconds (or whatever) before the anticipated exact convenient opt-in moment within South Today's current live progress.
The
BBC Oxford
closing Sting covers the rest of those remaining seconds, and has plenty of spare (looped?) continuing subtle animation and music bed to ensure that any further seconds of "pregnant pause" are not silent and static ones.
With the right planning/effort etc, surely the NWT/One Show handover could have been similarly slickly orchestrated?
For example: End the coverage by introducing a montage of highlights of the day’s Torch Relay events set to suitable music, which can be easily faded out at any point. Possibly prepare far more second/minutes worth of montage than is likely to be needed (or make it a loop) just in case. When the anticipated convenient moment in the One Show is only very few seconds away (or they’ve run out of montage), fade out the music and mix to an NWT endcap (the fade/mix can be done quickly or slowly, as required). The encap can linger if necessary, with the music perhaps never quite fully faded down to total silence before the switch occurs.