Can NotifyContainer miss events on primary failover?

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Using a 2 partition partitioned-sync2backup remote space, so 2 primaries and 2 backups. Lets say I have a NotifyContainer which is listening to the 2 primary partitions through a clustered space proxy.

If one partition fails over will I receive a disconnect notification through the LeaseListener? Or is that only if both primaries become unresponsive?

If I don't receive a disconnect notification, is there a possibility that the listener could miss some events while transitioning to receive events from the backup space?

Thanks, John.