Monitor OPC UA connection over time

Our gateway is on version 8.1.17. Lately we've had an issue where a few tags that are supposed to always be latched on fall to 0 momentarily throughout the day and trigger an alarm. Tag History is enabled for those tags so I do see the tag toggle to 0 and go back up to 1, however I would like to rule out laggy communication between the gateway and the PLC. Is there any way to monitor the status of an OPC UA connection over time?

A follow up question in the event that the connection can't be monitored : if the connection is indeed lost for an instant, how is the tag history logged during the disconnect? Is it considered null/missing or is it logged as a 0?