Discursive reasoning may involve deliberate searching, selecting, and arranging known propositions. In ḥads, the principles and their bearing on the answer are apprehended with unusual immediacy.
Speed alone is not a guarantee of truth. A person can reach a false conclusion quickly. The status of an allegedly certain intuition still depends on a sound connection between principles and conclusion.
The source also allows for differences among thinkers: what one person apprehends at once may require an explicit chain of thought for another.