Basically Trump would answer a question using his normal way of speaking and then the interviewer would drill into everything specific about what he said without understanding that he was being broad.

Example:

Trump says that he's told by his specialists that too much testing can be bad and lead to mass hysteria.

Interviewer asks who told him that, where he read it, then drills into him even more asking him for specific names and texts and sources which he obviously doesn't know off the top of his head.

The tone of voice of the interviewer is that of someone who doesn't believe what he's being told at all and is demanding every last shred of evidence Trump has in his brain in order to be convinced he's not making up bullshit.

This goes on for every single question Trump answers.

It was very painful to watch.