The OP doesn't give an example of these questions.

If you're explaining the game of 'Go' to me and I stop you and say 'Tell me about a time you achieved success' then I would expect 100% of candidates to stop talking about Go and start answering the new question.

On the other hand if I stopped you and asked 'Why do you think the counters are black and white?' I expect 100% of candidates to give me an answer that's fairly short and then continue with their original answer.

I can't think of a single question that would separate people into two groups.