In my experience, the clarity of any kind of "knowing" depends directly on two things: (a) the ability to be completely present and (b) the need of the moment.
When an autistic four yr old ran onto a path overlooking the gorilla enclosure, I ran after him and commanded him to "COME BACK." He did it instantly, disaster averted.

Many of the questions we ask aren't all that needful, we just ask them because of anxiety, wanting to resolve the tension. There is no really need, just want.