Obviously posted by someone who has never watched televised congressional hearings.
In public hearings, the questioners are limited to FIVE MINUTES for Q AND A. Seldom does a real question get asked. The congress-***** are posing and preening for the cameras, making four minute fifty-seven second self-serving statements for the camera, then saying, "Sorry, my time is up." On the rare occasions when a real question is asked, the "witness" takes three or four minutes consulting with his lawyer(s), then makes a nonsense, non-responsive comment. "Sorry. Time is up." The partisans opposing the inquiry or getting act the facts, simply use their five minutes to bloviate, knowing that they cannot be challenged or silenced.
In a closed hearing, the congresspeople can ask meaningful questions, and FOLLOW-UP QUESTIONS when the question is not answered. If a question is refused, there can be consequences. The answers to questions often lead to other inquiries involving factors and people not previously considered by the questioners.
It is a whole different deal.
Public hearings are a waste of time for everyone involved and an insult to the intelligence of the audience.
Assuming the audience is burdened with a three-digit IQ.