This is a problem which I have faced in a lot of interviews. When the interviewer is just asking textbook questions, there is less of a conversation. It is a bad experience for candidates where they cannot be themselves. Candidates are forced to think about the “perfect” solution that the interviewer wants to hear but on the other hand what matters is the thought-process of the candidate.
Interviews where I had a conversation with the interviewer went much better and have always managed to get through to the next round. I am a designer and I expect the interviewer to design WITH me when I am given a whiteboard exercise. More often than not, this is not the case. They just wait for us to conjure the perfect solution which cannot be arrived at in a matter of 15–20 minutes.
Conversations are important and when there will be a time when I’d interview, I’d make sure I take it as a conversation.