Yes, as we noted later in this thread it seems the breaking news was posted in the wrong section. It was later corrected, apologies.
That isn’t how that works. The folks performing maintenance have a basic idea how long it should take, that is the original estimate. If it needs to be extended, it is extended by the amount of time that they estimate it should take to resolve the unexpected issue and bring realms back up.
Again, that isn’t really how that works. They would have completed the work they are doing today if that were possible. In many cases issues come up during one maintenance that they cannot immediately take care, so it is scheduled for the next day or at some other time during the week. There are also situations in which something that needs to be done is waiting on another task that may not be able to be done until another time, in which the maintenance has to be scheduled after.
CS was aware of the scheduled maintenance. As previously noted by others, it was posted, it just was posted in the wrong place by mistake.