Hi JoJo
Hope you're feeling better after your break. I'm not doing a comparative thesis myself but I did read one last month. The way it was written was around a problem... so Intro chapter sets up the problem - boundary structures in literary texts and puts forward two authors - Bakhtin and Lotman as examples of people who have theories about these, together with a rationale about why they're useful to look at. The thesis then used alternative chapters to separate and compare different themes around the notion of boundary... so ch1 - dialogic boundaries - M thinks this (key thrust of chapter), L thinks this... some examples to show similarities/differences to M's thinking. ch2 - L thinks this (his substantive theories)... some examples to show how same/different from M... and so on. I think there were 2 or 3 paired chapters like this, then a discussion and conclusions. Not sure if that helps at all.