You pretty well nailed'em WSA. Deliberately exposing themselves even for a few seconds to humans during the day is extremely rare. If they do it, it shows they have seen and watched you over time and concluded you mean them no harm. (Leaving a few snacks in their home range over time will help them decide.)
To them, the night is THEIR time, and they have no fear of intruding onto human's home range. For reasons unknown to us, their prime "witching" hours are from about 2 am (varying with the season) until dawn. I'll bet that a close review of night time reports from campers and residents will show that to be true.) I think they realize that most folks are soundly asleep at those hours.