You should be able to pull this off, depending on how the 2-columns are set up in InDesign.
Place the Word doc into a text frame that has two columns -- not two separate text frames, a single text frame with 2 columns. With the frame selected with the black selection tool, increase the number of columns to 2:
Make sure that the default setting for footnotes to span columns is turned on in Object > Text Frame Options:
Thank you for your suggestion, appreciated. I have been partially successful. While the eventual book will emerge at about 400+ pages, I am breaking it up into individual chapters, perceiving them to be easier to manage. I setup a master page, then added 30 pages for the chapter I'm working on. I then tall the master pages to apply to all pages, then save. At this point, the master pages display is reporting that the master setup is applied to pages. Place now drops the .docx file in with page 1 correct in columns of text, with footnotes spanning across the bottom of the page.
The following pages do not place text in 2 columns, even though I can see through the text that the 2-column master page setup is there, but for whatever reason is being ignored. Both text and footnotes span the full width. This where it gets interesting.....
Within the ID document, If I repeat the "page options" setup for each page one by one, I can get the desired result. See attached screen display.
When you create a new document, these are the settings you will want. Primary text frame with 2 columns.
If you want to set up the master pages from scratch, add a text frame on both the left and the right the master page. Make sure each of the text frames has two columns in it.
Thread the frame on the left master to the frame on the right master.
When you're ready to place the Word document, put your cursor over the first column on the first regular page and click. The text should flow from one page to the next into the two column frames and any footnotes should span both columns.
Many thanks for your help, appreciated. Notwithstanding working at this for past 2 days, I've still got finger trouble, getting no further than previous display image. Text flows 2 columns with spanned footnotes page 1 only, thereafter full page for all. My master pages spread is setup for 2 column text, full span footnotes and threading turned on. I've told it to apply to all pages, but nothing changes.
By chance, might you have a template for this situation?
I may have solved the problem.... While the selection "apply to all pages", did not seem to work, dragging and dropping my master page in the pages did work. The wholw of the chapter I'm working on ended up with a correct 2-column text display and full wide footnotes. Many thanks for all your help, appreciated.
You should have the drag the master page. That sounds like a bug, or a file that has gotten corrupt. I can't say for sure what's going on without examining your files.
Regardless that "apply to all pages" does not seem to work, I am comfortable with drag/drop master onto pages as perhaps an alternative undocumented feature.
The important thing is that it works for you!