Personally, I think if you’ve reached a point where consensus hasn’t formed naturally in some other venue then it is kind of a failure.

Trying to hash thing out in a meeting is ok as a last resort, but it seems less than ideal. Particularly when people often need time to form coherent ideas.

Group meeting with lots of presentations? Just sounds like my idea of hell really. I’d much prefer to read some notes on a subject and then later sit down with someone if I need to go into more detail.