A CNN panel with Jake Tapper expressed bewilderment that former Special Council Robert Mueller appeared to be unfamiliar with key parts of his own investigation.

Tapper asserted that there were “times in the hearing when he was sharp as a tack — but we can’t avoid the fact that there were times in the hearing when he was not.”

“There were times in the hearing when either he couldn’t hear what the questioner was asking, sometimes they spoke very quickly and they were not particularly polite and respectful of the fact that this was a 74-year-old who obviously was having trouble,” Tapper said. “There were also times when it seemed like he was unfamiliar with parts of the investigation. Like, he didn’t seem familiar with the name Fusion GPS.”

Another guest chimed in and noted that he also seemed to be unfamiliar with the name Corey LewandowskI — Trump’s former campaign manager.

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Someone also noted that he couldn’t remember who appointed him as the Attorney General in Boston.

“I don’t know if he couldn’t hear, or if actually he is not as well versed with this report as many of the people on this panel are right now,” Tapper said.