When my sister in law was first showing signs of early on-set Alzheimer's, she behaved like you said your neighbor did. She giggled and laughed at every thing that was said to her and didn't answer. That was almost 20 years ago and she is in Hospice care right now. How is your neighbor?
I don’t live by him any more so I don’t know how he’s doing.
Trying to converse with him was like talking to the back wall of a hand-ball court.
It’s the same with old Slow Joe, I guess... he’s just about as reponsive and ‘in touch’.