add .html files to a .qch file?

Hi,

I’m not a developer and am brand new to Qt. I’m looking into integrating our documentation (doc for a Qt SDK we’re developing) into Qt Creator. So far I’m able to get our API reference to display with the Qt help that displays in Qt Creator (using Doxygen to create a .qch file) and am able to get Intellisense-like functionality, so I feel like I'm half way there. But I’d like to know if there’s a way to add .html files to a .qch file or if Qt Creator or Qt Assistant will let me create a .qch file from a set of .html files.
To summarize, I’d like our concept topics, which are in .html format, to appear with the API reference topics—in the same .qch file. Qt Help Collection almost sounds like it will work, but everything I read implies it’s only for when you want your help to display inside Qt Assistant, which we don’t. The QTextBrowser widget seems like it might help somehow?
Any help/advice would be much appreciated.
Thanks,
Evil Bunny