Buchbinder Ch 2 headings don't get promoted
Compare Chapters 1 and 2 of Buchbinder c_Buchbinder_Chap_1.docx output_Buchbinder_Chap_1.zip
c_Buchbinder_Chap_2.docx output_Buchbinder_Chap_2.zip
Header promotion works well in Ch 1, but misses all the headings beyond the very top level in Ch 2. In Ch 1, nothing that gets promoted isn't a header.
In Ch 2, the Chapter title and subtitle get caught as h1s, but none of the other headings get promoted. There are 25 h2 promotions, but they are all either entirely empty, filled only with tabs, or a visual divider made of asterisks.
Any ideas as to the differences between chapters 1 and 2 that cause 1 to work well but 2 to be less accurate? It doesn't appear to be Word styles.