https://screenrant.com/ncis-sydney-season-3-episode-9-postponed-cbs/

NCIS: Sydney’s newest episode postponed by CBS, and the series is now on a hiatus as the fall finale will not be airing as scheduled.

NCIS Finale Pulled Hours Before Airing Finally Gets Official Release Date (https://www.cbr.com/ncis-sydney-official-cbs-release-date/)

Less than a month later, CBS officially confirms the show's official airtime.