I didn't see the debate. Nor have I listened to the news. But I've been saying to my family for weeks that the best thing that could happen for Democrats right now is for Biden's incapacitation to be exposed to the world at the debate, forcing him to withdraw from the campaign, and for Dems to get behind a young candidate that energizes the country.
From what I understand, that's looking increasingly likely to be what occurs over the next 30-45 days. If I am correct, then that is going to dominate the news over the next 6 weeks and bring talk about exercising the 25th Amendment if Biden refuses to step aside.
The thing that worries me most is the risk China, Russia, Iran, or Israel try to take advantage and do something stupid during the next 6 weeks. For that reason, I believe it is critical to the country for the 'powers that be' step in and pretty much force Biden to step down as President within the next 48-72 hours. It is a very dangerous time.