I'd like to incorporate both ideas. I agree with Ms. Bell that witnesses come here often from a great distance and we should listen to them respectfully. But left unfettered, of course--Mr. Harris's point is well taken--that could be 10 minutes times....
Frankly, from the point of view of the witnesses, I think it's unfair to the witnesses when four or five of them are huddled, and have prepared, and they're told for the first time, “By the way, folks, I, as chair, am exercising my even-handed discretion. You'll be limited to 25 minutes among the five of you.” In my experience, I think that has caught them off guard.
So I would propose that individual witnesses be provided with 10 minutes for their opening statements, but a panel of three or more will, in totality, be limited to perhaps 30 minutes, and that would afford us time for the potential 75 minutes of questioning.