[Keith]

Wow. I don't remeber any announcement of Newsnight coming back to NC, only speculations on this forum.
Click seems to be a filler so WN can go to ads at the end of the hour.
Not only Ten can overrun, but Newsnight can also be delayed, so they don't start for a couple of minutes after Ten ends. NC can, of course, fill it with a looped clockless countdown.
Also, will this be first time in ages that UK output of News Channel would not do live TOTH on a regular basis (i.e. not counting breakdowns)?

Arguably it would have been better if they could have run Newsnight on a 15 minute delay on BBC News, so that it ran 22:45 to 23:30. This would have allowed Sportsday to be retained between 22:30 to 22:45, with the potential ability to shorten or completely drop it if the Ten was overrunning. However, in reality it might not be as practical to do this, hence why they've opted for the scheduling they've announced.