Currently both gateways are running version 3000.202.16
The gateways say they are online and the Windows server is running but when I check the online service it shows both as offline. Stopping/restarting the Windows service on each gateway gets things working again so secheduled refreshes continue.
I would think if there is an Internet inturuption, once it came back up the gateways would re-establish the connection but that does not seem to be the case.