Splitting and Renaming

As mentioned, if the content of the pages is consistent, this can probably be automated using a custom-made script. I've developed hundreds of such scripts for my clients, so if you're interested in hiring a professional to create it for you, feel free to contact me privately by clicking my user-name and then on the blue "Message" button.

Yes you would need a custom script for the file name by extracting "the first line".  Is the first line always in the same location?  This would make it easier.  If not, you could easily extract the information by highlighting the text you want to use for the file name.  This method is not as automated but it will work.