I didn't watch the whole thing, but I know Coats said that he thought it was inappropriate because of the ongoing investigation. In Watergate/Iran Contra, the witnesses didn't refuse to answer because of a separate investigation. Their behavior is odd, especially with the BS "didn't feel pressured" response, while simultaneously refusing to answer such a basic question. Anyway, I wasn't specifically talking about them, but what you posted prior. You said King was going to potentially ruin the investigation with his questioning.
I don't know why you bash King right away, but you'll take whatever comes from Trump appointees at face value, since they are "IC".. Coats' previous testimony contradicts the news that came out. Contrary to what you claim, I don't believe any of them
committed to answering questions in private. There really isn't any good reason why it shouldn't be public, though, even if they try arguing Rogers/Coats = national security while Comey is fair game.
Discredit IC? This nothing to do with that. It's an issue with appointments made by Donnie.
https://thinkprogress.org/pompeo-wikileaks-cia-9756f59b09af