To me, Tim had a lot of nerve chiding the SOS/his staff and came across like a whiny, arrogant putz. Implying they were trying to cut off the interview was highly presumptuous of him. He wouldn't have said that about ain'tsobright. Nothing new under the sun.
Powell is and always has been able to handle the press. Why his staffer thought he shouldn't answer the question by using this ruse doesn't know his or her boss very well.