When can the NTP protocol get used when there is no WAN connection?

[#1]

23:15:44, 26 Jul. WAN connection WAN1_INTERNET_ETH disconnected.[ERROR_USER_DISCONNECT]

(yup - I disconnected with the software interface on a hub2)

23:15:44, 26 Jul. WAN Sensing Auto sensing Running

23:15:44, 26 Jul. SIP WAN DOWN

23:15:44, 26 Jul. WAN Sensing Auto sensing Complete, interface selected

23:15:55, 26 Jul. NTP Server: ntp.plus.net

23:15:55, 26 Jul. NTP synchronization success

(IPv4 session down - couldn't access the web - or anything else)

Re-established/reconnected IPv4 via the web interface on the Hub2

Posted this.

[#2]

Looks like the : NTP synchronization success message is displayed regardless of the outcome.