I was in one congregation where no one was answering and the conductor threatened to call on people who didn't have their hands up....and he did. The attendance was lower the next meeting. Then someone clued him in that he was not succeeding.
I would stand, in silence for what seemed an age after reading the set question . It was a battle of wills and eventually they won. I was replaced with an elder who would either answer it himself or read a scripture instead...
Back when the Book Study still existed I was attending a rather large group held in the KH. Although there was typically 20-30 people there, the participation was awful. On one even-worse-than-usual night, the poor brother conducting was getting NO help. After having to drag comments out during the first few paragraphs, the next one was read and he asked the question. Zero hands went up. He calmly gazed at the audience and said: "No comments? Okay, let's just move on to the next paragraph then. Paragraph 5, Br. Reader." I just about died.