"Thank you in advance for your patience, and we apologize for any inconvenience.does not do it.
The My Oracle Support Team"
The MOS folks write their maintenance notifications as if it's no big deal, as the outage is on a Sunday night - IN THE U.S.
For those of us ahead of US time, it's Monday morning, the time when you follow up on weekend problems - one of the times of the week when you are more likely to want to use MOS to log SRs or search the knowledge base for the myriad of Oracle bugs that could be the cause of your issue unavailable.
Not impressed for a Global support site, based on technologies that support 24x7 operation.