It’s chapter 17 and we’re going through an interrogation, or maybe it’s a debriefing?

Throwing my own pretentious hat into the ring: there are two Blake allusions that the footnotes don’t pick up on: Bloom talks about Molly doing calligraphy and recalls the chemical corrosives used in the process, and a little later he alludes to the universe in a grain of sand.

Maybe Blake is the interrogator? He should be.