TOC for hierarchical book using child book TOCs?

(My first hiearchical book in FM11. Win7x64.)

I've created a book of two child books.

Each child book has:

1. A generated TOC as its first file. Its first paragraph in the primary flow has the paratag dtc-ChapTitle.
2. Content as its second file, with tags such as h1-Head1, h2-Head2, and other paratags.

(Side note: that child book design implements the idea of a chapter TOC without using a text inset. That's how this adventure started.)

dtc-ChapTitle appears only in the (generated) TOCs of the child books (1's above), not in the content files (2's above).

The parent book has two child books and a generated TOC. The generated TOC of the parent book is to include dtc-ChapTitle, h1-Head1, and other paratags.

The parent TOC does generate with h1-Head1, and other paratags, but not dtc-ChapTitle.

Maybe I don't know how to think about hierarchical books and am clinging to flat-book thinking.

Am I being gently nudged toward using the <$chaptertitlename> variable somehow?  Section "cover pages" ?  But how do I make a "chapter TOC" the first file in the child book -- or otherwise make the chapter TOC appear before the chapter that it describes?

Best regards,