On May 8th as the House committee hearing about the Benghazi attack occurred, you could have tuned through every major network with the notable exception of Fox News and (a) not found any coverage or (b) found so little coverage that you would not even have known it was occurring. Even C-SPAN dropped the ball, devoting that time period to the blathering in the Senate.
In a chart put forth by the Media Research Center, the disparity should be an embarrassment to MSNBC and CNN, but it clearly is not. In their view, Americans should not be informed of the way the U.S. ambassador in Libya and three defenders were completely abandoned by the White House, State Department, Department of Defense, and the CIA. One could have sat in the White House situation room and watched the attack as it took place.