Think about what your interview process would look like if it was a normal day at work.
You show up out of the blue with a task that isn't connected to anything the org does and with all the decisions made already. I cannot search the internet, but you do not explain why. You sit down across from me and stare.
In my interviews you can use the internet. I don't stare, I'm mostly taking notes and answering questions, either listening to the candidate explain things or explaining things. No decisions have been made. I describe a problem, we solve it together. Just like we might on the job.
I can't do something as simple as empty my bladder while someone is watching. I certainly can't code something complex with someone watching me. Luckily, I have never had a coding job where I had to be watched while working.
You show up out of the blue with a task that isn't connected to anything the org does and with all the decisions made already. I cannot search the internet, but you do not explain why. You sit down across from me and stare.