“Don’t conflate that with this and certainly don’t conflate that with what happened to me,” Ms. Conway responded. “Let’s not always bring Trump into everything that happens in this universe. That’s mistake No. 1.”

She did not go into further detail about her own experience and could not immediately be reached for comment on Sunday.

In an interview with MSNBC in 2016, Ms. Conway said that when she was younger, she knew members of Congress who were “rubbing up against girls, sticking their tongues down women’s throats who, uninvited, who didn’t like it.”

At Politico’s Women Rule Summit more than a year later, Ms. Conway referred to that interview, saying that some members of Congress had tried to “shove their tongue down my throat or rub or do worse,” but asserted that “nobody wanted to hear about it” because she was aligned with Mr. Trump.

“Every time that happened to me, when I was younger and in the workplace, every time that happened to me, I always told a friend, I always told a female relative,” she said. “There is shame involved because you tend to think it’s on you, ‘It’s your fault,’ somehow.”

Ms. Conway said at the summit that she never saw those men as powerful after the encounters. “I looked at them as weak and pathetic,” she said.

It was not clear if those experiences were the basis of her comments to Mr. Tapper.

She said she found Dr. Blasey “compelling” and “credible.” But she suggested that perhaps Dr. Blasey was misremembering who was responsible for the assault, and expressed support for Judge Kavanaugh.