Yes, so basically out of the 3 parts of the AC, the intense comments came from two of them. One was the partner doing the group exercise, the other was a partner with whom I had a discussion following a written task - there was a topic to choose and write about for about an hour, and then another hour of discussion regarding the topic I had chosen and what I wrote about it. It was pretty commercial, like "do you think a company should take into account X" or "how would your answer change if Y" or "overall, do you consider Z to have been a successful policy" and it was on a topic I felt I knew pretty well, so in retrospect I'm thinking maybe my answers came across as overconfident? Like not enough counterarguments, etc.