This was discussed in McCullough’s book John Adams.
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Lost all respect for the man due to his attacks on Trump and his Biden support going back to 2017:
An hour and half of puke with Charlie Gibson:
https://www.youtube.com/watch?v=dDV3xNjHRWA&t=29s
7:25, 27:00 - 29:00, 33:00, 1:02:00, 1:26:30 - 1:28:00 comes to mind.
It is an interesting piece in that it truly demonstrates the bias and nastiness of a “journalist” and a “historian” right after the 2016 election and the predictions of both a pandemic and Biden. Not to mention Gibson I believe sits on the Presidential Debate Commission.