So you could miss updates ? I presume they spool for a decent time though, like 24 hours or more, so as long as you checked twice a day, you'd probably be fine.
Technically speaking yes. But they will have to remove the update from the stream in a few hours after spooling it. That happened with a 622 update that went bad, by the time I checked again it was gone. BTW I check at 5:30 AM and around 9:00 PM, they usually spool software around 11:00 PM (all Pacific time).