RCA alert suppression for HA sites

Good afternoon all,

Has anyone worked with RCA rules for duel entry point sites? It seems that even if both entry points are offline we still receive offline alerts for all downstream devices. This may be due to the fact that both entry point devices go offline a few milliseconds apart form each other. Is there a way to retain individual alerting on downstream devices while still suppressing these alerts during a full network outage event?

Any help is appreciated.