Acrobat - combine multiple PPT files together with slide notes

I have a large number of PPT files and each slide has notes.  I want to use the Acrobat Pro Combine option to combine a large number of PPT files together, but I want the notes to automatically be included as part of the result PDF file.  I can't figure out how to easily do this.  I do not want to individually create a PDF file for each PPT file and combine the PDF files together.