Both DUDES are suffering from diminished capacity. Take Trump's script away from him and he cannot put coherent thoughts together. Other than the recent press conferences on covid, why do you think he has avoided press conferences when questions are being asked for 3 years? Because he knows he can't give specific answers with detailed information to give a coherent response on policy. With his current daily press conferences on covid, once he deviates from the prepared script written for him, he cannot give any specific information, mispronounces words, stops mid sentence and deviates to another subject, and then starts to go on and on about how "wonderful" and "beautiful" everything is, then repeats the same thing a few more times, and then goes on with his "optimistic" fantasyland with unrealistic predictions (lies!!) about the crisis. He is going senile.
Wait for the debates when Trump has to think and speak on his feet without a script, and answer questions requiring in depth knowledge and a cohesive thought process. He can't do it. All he can do without a script is speak in "twitterese".