Pace an interview carefully so that you can cover all the necessary ground in the time allocated. You must be able to direct a candidate gently towards another subject if required, or hurry them along politely if they linger too long on a favourite topic.
Allow a few minutes for small talk before the interview proper.
Talking too much initially may be a symptom of nervousness.
Initial stuttering and stumbling over words and phrases may also be a sign of nerves.
Talking directly to the point shows that the candidate is listening to you attentively.
It is not necessarily a bad sign if a candidate shows some emotion during the interview.
Try to control the flow ...