It's common for networks to run biographical information about people who are not well-known to the general public. Obscure Foreign Service officers are not usually on TV for hours on end, but diplomats like George Kent, Bill Taylor, and Marie Yovanovitch were subpoenaed by Congress to testify about President Donald Trump's actions in Ukraine.
Fox included the biographies of the three diplomats, but also included some Republican talking points that could easily be viewed as stone-cold facts by an unknowing viewer.
The audience quickly learned that Taylor, for instance, had been attacked by Trump previously, and that the GOP had already criticized his knowledge of the situation.
Fox also put up background information about California Democrat Adam Schiff, who is leading the impeachment hearing, which Politifact has already partially debunked.
CNN stuck to general facts and recent testimony for its on-screen graphics about the witnesses.
fox's graphic for bill taylor vs. msnbc's graphic
you already know how this is gonna play out pic.twitter.com/Xv28fiaMJY
— Danielle Misiak (@DanielleMisiak) November 13, 2019
This - FINALLY - is the point. Very, very clear that the White House finally released the aid only when the whistleblower report was coming to light and the Intel committee was already starting its investigation! They relented because they finally got caught. pic.twitter.com/GiFbOMBKSE
— Josh Marshall (@joshtpm) November 13, 2019