I never ended up hearing back. I think the person that was asking for it went to investigate a few other form extensions that said they handle multiple form pages.
Just to be clear, I, myself, wouldn't do a form on multiple pages
The main reason I've seen it used is for things like signup where you ask them for 3 simple things on the first page. On the next page, you ask them for more info (address, phone number, etc). It's a way to be able to collect more info without scaring them off at first and not getting any info, as far as I can tell. I could think of a few other reasons to want multiple form pages.
I was able to use CKForms and just have the success page of one form redirect to the next form, but I couldn't pass on values from the first form and have them populate values on the second form like the user was asking. The user would also see a message "thanks for submitting your form" or something similar on the second form that the user did not want.
I think you could coax CKForms into doing it. With a little help from the developers, I think it could be made to work better and be easier to configure.
Hope this helps.