Embedded Attachment Extraction?

Hello All,

I'm trying to setup some email rules and Microsoft Automate to save pdfs.  My problem is that the pdf is embedded in an email attachment, inside another email attachment setup like this:

Email --> email --> pdf

My supplier sends these from their system so there's no way to have them change.

Does anyone have any idea of how to extract the pdf automatically?  The rules and Automate run off the first email attachment, not 2nd embedded attachment (pdf).  Therefore it doesn't work.  Thanks, See picture.