There can be no question that Condoleeza Rice will have been thoroughly coached to give as little information as possible in her testimony at the 9/11 investigating committee hearing on April 8th.
One time-honored way for a witness to provide as little info as possinle is to answer every question with an evasive prolonged speech and that way eat as much time as possible in the time allotted for the testimony.
The time allotted for Rice is 2 1/2 hours, and that's it. It was agreed that she would not be required to come back for any more testimony, despite further questions that might arise from her testimony.
So don't expect much enlightenment from Rice's testimony.