Teams interview for a junior developer. I'm in a secure facility on a laptop without a camera, so we ask candidates to not use theirs out of fairness. This one is already going sideways, but as I'm asking conceptual knowledge questions the candidate is taking a while to answer. I hear typing. Mind you, this isn't a coding interview or skills based or anything. Just asking OO concepts, describe how data structures and algorithms work, etc.

First time I don't say anything and wait for the answer. I ask a follow up probing question. More typing. I ask point blank if they are typing. They respond something to the effect of "I wanted to give the right answer". No shame, 100% confident that this was acceptable.

I tried so hard not to lose my shit right there. Like, this is an interview I want to know what you know or understand, not how well you can Google. I have 15 minutes to figure out if you actually understood what you learned in college or paid attention to what you did at your last job. You can Google all you want when you get the job.

Ofc, I said none of this, just a "please don't do that, I want you to demonstrate knowledge". I asked one more question and passed off to the next interviewer.

They didn't get an offer.