A verse may appear to answer an unspoken question. Reconstructing that implied question can clarify the connection between statements, but it does not itself amount to a transmitted historical occasion of revelation.
For example, a claim may be followed by the removal of an anticipated objection, creating an argumentative question-and-answer sequence even without an explicit interrogative sentence. The reconstruction must be justified from language and context.
An implicit question is therefore an interpretive explanation of cohesion, not proof that an outside person necessarily asked it before the verse was revealed.