Reading is experimental, it is clear. Between a very old school style (the central novel is "supposed" to have been written in the 40's) and a contemporary style (exchanges on the sidelines of the book of two people taking the book), follow ... C is really two stories. And which is the most interesting? Well, no ... A very metaphysical, the other is very blue flower.
The story of the novel is interesting at first. We find elements dear to the author. The boat can be the counterpart of the island of the dead. Many mysteries, but very few answers.
Anyway, an interesting play from the beginning, I went to a tedious reading, motivated only by knowing how it would end. And when we see the end, well ... I do not spoil the surprise.
It's like Lost: exciting at first, somewhat in the middle, and not at all in the end.