Not necessarily!
But don't forget this:
Mr. DOUGHERTY - Well, Bill Shelley, he told me that he thought he saw him carrying a fairly good-sized package.
Mr. BALL - When did Shelley tell you that?
Mr. DOUGHERTY - Well, it was--the day after it happened.

This is as bad as Fritz Lies.... "Well I don't remember who told me that (our patsy, the arch villain) Lee Harrrrrrvey Osssssswald had a room in a rooming house on Beckley. One of my officers out in the Hall told me that, but I don't remember who it was" In reality, Lee Oswald had told him that he was registered as OH Lee in the rooming house at 1026 N. Beckley.