With a couple hours of preparation, a good trial would have ripped these witnesses a new orifice in a five minute Q & A. No speeches, just five minutes of leading questions that leave no wiggle room for BS answers. But then agian, these are politicians and as we used to say in law school, "those who lack the skills to practice law, become professors, and those who lack the skills to practice or teach law go into politics."
That also why Bonehead needs to appoint a select committee that will hire lawyers to investigate, issue supenas and call witnesses that the lawyers will interrigate not this round robin side show.