George Conway suggested Thursday that Donald Trump is in “cognitive decline,” in spite of a public warning from his wife – a senior adviser to the president – that he’s not qualified to dish out medical advice.

Trump had raised the temperature Wednesday in his feud with Conway, calling him “a husband from hell” in a tweet and telling reporters that he’s “a whack job.”

The back-and-forth prompted the lawyer’s wife, Kellyanne Conway, to publicly side with her boss in the month’s long spat.

Thursday morning, George Conway was back on the attack, promoting a decades-old Tom Brokaw interview with a 33-year-old Trump as evidence for his argument that Trump is nuts. He also claimed the president is a “compulsive liar,” and that’s why Trump’s lawyers didn’t want him talking to Robert Mueller.

After calling Trump “dumb” in one assessment, Conway said, in response to a follower’s claim that Trump could be in “cognitive decline,” that it’s “possible” the 72-year-old president is losing his mental faculties.

Yes. He’s worst kind of dumb. https://t.co/SKDRrPFuJu

— George Conway (@gtconway3d) March 21, 2019

“Also possible. There’s a clip of Trump online talking to Tom Brokaw thirty years ago and Trump is speaking in complete, coherent sentences. It’s quite a remarkable contrast to today, when all you get are these often incomprehensible word salads,” he said.

Here’s the Trump-Brokaw interview. It’s from 1980. Trump was 33, and was articulate and coherent, unlike today. https://t.co/lmcidXbimA

— George Conway (@gtconway3d) March 21, 2019

WATCH:

Kellyanne Conway gave an extended interview on Thursday in which she said it’s “unlike her husband to tweet and it’s a new development that he’s no longer “supporting the agenda of the president and my work there.”

“I appreciate the president defending what he thinks is unfairness. I’ll leave that up to him. I was raised, though, in a household of strong Italian Catholic women who taught me that you air grievances like that in private, so it is very surprising to see it be so public,” she told Maria Bartiromo on her Fox Business show. “I’ve always encouraged him, I think would he be a fantastic judge or law professor.”