1. If we are analysing comments or letters that have appeared after the article or whatever, are we allowed to state the contention of these letters/comments? The speaker said that doing that means that you are treating the assessor like they are dumb, and therefore they will treat you like you are dumb. He said things like "don't tell me the contention, I'm smarter than you all and I already know the contention"
Well, state whether the commentor agrees with the authors contention or not, don't simply state their contention, looks a bit repetitive.
2. Is it a bad thing to analyse the article in chronological order?
Not a bad thing, I've never taken a different approach and I still got an A+ on my last analysis SAC. Examiners want a holistic approach, but if you write better with the flow, do that.
3. If the letters/comments appear after the article, where do we analyse them because usually I have a linking sentence which includes them in the analysis of the article but the speaker implied that this was wrong and that you had to include them during the analysis of the article. You can either dedicate a paragraph to them, or chuck the comments in throughout the article, linking them to what they agree with (preferred), if that makes sense?