Here’s the easy-viewing version of what happened August 23, 2015 (at least from 8.30a onward). One protagonist may not have slept the night before. The other protagonist may have expected only a breakfast plan for that day, albeit an unusually early one.
The day of puzzling culminated in a finale featuring the book (aka the original MP puzzle), which in turn led to the real finale (aka the real metaproposal, and the real proposal).