Thanks for these suggestions. You may be right. I split the article into pages based on feedback from early readers that it was too long. Custom nav bar in the top-right, but maybe still not quite right. I've never previously posted anything of this length or complexity.
Thanks also for reading so carefully. My web stats say many people stopped at the summary!
Having all of the sections of the article on the same page would have helped surface and resolve a lot of these potential editorial issues.