Friend stood up, said thanks very much, and walked out.
The next to the last interview I had, I showed up exactly on time and the interviewer indicated that I was late. I showed him the paper on which I had written down his name and the time and then I told him, "If you can't even keep track of when you tell someone to come to an interview, I certainly don't want to work for your company", and I walked out.
I thought then and still think now, he had already decided to hire someone else and was trying to make it look like I was late for the interview so he could use it as an excuse not to hire me.
That happened to me the last time I was interviewing, about 9 years ago. I was driving to the interview, well on my way to being there 20 minutes early, when I get a call asking me why I'm late. I explained that I had a 2:00 appointment, not a 1:00, but that I would be there shortly.
Later, when I got home, I checked my email and confirmed that it was scheduled for 2:00. I have no idea if it was an innocent mistake on their part, or some twisted part of the interview process.
In any event, I turned down their offer, though the confusion over the time didn't play into that decision. (It helped that after 3 months of unemployment, I got three offers within a couple of days of each other.)