I'm sure someone can point to picture examples.
I can point to a video example
Here, you can see an overnight bulletin from Studio C on the end of the News Channel, with the old countdown and lower thirds being played out on a clean feed, fed through to N6
's gallery. This method did sometimes lead to issues (the last seconds of the NC countdown occasionally appeared on World).
It was in this way that it was slightly different prior the News Channel move, as it is now controlled by different Viz engines from Studio C in NBH, I'm led to believe.