it feels like a major system failure here, they've done well to keep the services going.
I suspect most viewers won't have noticed a thing.
BNCS is a pretty robust system, and it doesn't spectacularly fall over very often. When it does, you often need to think fast to work around it, and kudos to the control room staff who kept shows on the air, albeit without quite as many bells and whistles as usual.
(Last time I had a major BNCS fault, one of the effects was that it de-routed a whole load of talkback routes for the three OBs we we live with. We were busy trying to fix the fault and didn't find out about that bit until later, as in all three cases the PA on site did exactly what they were meant to, and got hold of transmission on the phone.)