At recent interview I attended, the interview initially went really well. The panel were all technical people, it was friendly, and challenging.
The CTO was prepared to offer me the job, but one of the panel had dissented, and so he called in a couple of extra guys (from HR, and a solution architect) to ask some additional questions.
At this point the interview went a bit south. The interview which had been scheduled for an hour, at this stage had already been going for 1.5 hours.
They asked me a series of confrontational questions, which I felt weren't going anywhere like 'What's your worst workplace mistake?' and 'What's the advantages and disadvantages of a small office vs a big office?'.
We were all aware that the interview had gone over time, and it felt like it was going around in circles.
I'm wondering if I had said, 'Hey can we wrap this up, I do need to get back to work', would have been a good idea.
From the CTOs point of view, he might have appreciated that actually, we weren't getting much value out of these questions.
Alternatively - I could ask something like 'I'm not sure what you're wanting to get out of these questions, is there something you're trying to ascertain?'.