It gives obvious examples of the way our awareness of factual circumstances give us inroads into what might be experienced. And the upshot is that this might suggest the rest of consciousness can be understood by iterating forward in a similar manner. Dennett makes this exact same point about Mary's Room. Far from talking past the article, it's attacking the fundamental principle.

"Might suggest" - sure, that might be possible. That's not so much a criticism of Nagel as the hope that the problems he's highlighting might one day be solved.