@rds Yes you can combine multiple files: copy /b <fileA> + <fileB> + <fileC> .... + <FileX> <DestFile>
The resultant file will not be optimized, even if the source files are - stagger will not equal total nonces.
Yes, I've tested a combined file, specifically for the purpose of testing combined files.
The files have no headers or footers - all the metadata about the file is in the filename, the file contains only the precomputed nonces.