You clearly didn't see the clip; what you describe was just a part of it, and there Trump appears to just have not heard the question.

Trump doesn't seem to hear alot of questions - and has been reported to ramble on about all sorts of nonsense, during state visits and high-level meetings.

Almost like a dementia patient.

...but that is just my opinion - even so... not clarifying an asked question is not, well uh a sign of overall "great leadership"...