I'll get it up soon, probably should. This little snippet will help you though:
$ man --html="$(which markitdown)" <man page>
That goes man -> html -> markdown which is not only token efficient but also llms are pretty good at creating hierarchies from markdown
I bet you could do the same thing with pandoc and skip serializing to HTML entirely.
Apparently yes: https://pandoc.org/MANUAL.html#options