Let me further explain why an interview might go on for an hour or two. Perhaps some reporters are relatively young and inexperienced and desire to do a good job. Hence they think the more thorough, the better.
這邊再解釋一下為何會一、二個小時，可能是有些記者比較資淺、年輕，想把事情做好，所以就希望自己問得愈完整愈好。