An interesting take, but I disagree- Fosse is a major writer. I think that your interpretation of the doubling of Asle is incorrect, as they are both the same person, but different versions living separate lives; one converted to Catholism and gave up alcohol, and the other didn't. Parallel lives experienced as possibilities, roads taken and not taken, with other people in their lives similarly doubled and split. Both narrators speak, both observe moments from their past as if as from outside and in real time, but only one of them experiences 'that moment', in the car.

People compare Fosse to Beckett and I can see some of that in the repetition and fragmentation, but Fosse is much closer to Proust in terms of trying to make sense of time, memory and identity through language. There's a magic to Fosse's prose that I haven't experienced in any other writer, a lightness that makes the images seem to glow on the page. If other people can't see that or aren't receptive to it's possibility then fine, I get it since I also don't see why some other writers are revered. But I urge you to take another look at Septology as there is a lot more going on beneath the repetition.