The combination of switching to remote video interviews (which feature speakers in a newsroom-like "talking head" configuration), an increased focus on one-on-one interviews and a steady stream of news conferences has resulted in a reconfiguration of the visual layout of television news.
The timeline below shows the total seconds of airtime on CNN every day since January 25th that visually depicts "news" or "newscaster" or "newsreader" or "news conference" showing that in mid-March such imagery ceased being so day-to-day variable and instead stabilized.
