The program suffered over the last year as Glor was not as familiar to viewers as his predecessor Scott Pelley, who had regular prime-time exposure as a correspondent on “60 Minutes.” Glor was named to the job without having been a regular substitute on the newscast, typically a way for networks to groom a successor for the anchor chair. Both Holt and Muir served as primary substitute anchors before getting their jobs.
Source: Los Angeles Times May 06, 2019 10:52 UTC