The Orville is quite obviously a take off/spoof of Star Trek (As I described it to my son "as M•A•S•H is to war, The Orville is to Star Trek" - got him interested for about half an episode).
In Star Trek: The Next Generation Skin of Evil (S01E22) Tasha Yar, the chief security officer, is killed off and written out of the series.
In The Orville Home (S02E03) Alara Kitan, the chief security officer, has an injury that requires her to recuperate on her home world and is written out of the series. (Hand-wavey ignoring the attempt to have her be able to recuperate on board the ship.)
Is there any info that there was an intent to ties these two roles together or that it was planned from early in the series that Halston Sage's role on the show would be limited as Denise Crosby's was?