Apple notes uses its rich text format, that is incompatible with everything else, including Markdown.
However, Apple Notes did get improved PDF support recently, did it not? And with reMarkable connect, you can connect the synching-feature to the iCloud drive and store all your handwritten notes as PDF. Once there, you can add them to Apple notes.
You can make a Shortcut that takes all new PDF files in a (iCloud drive) folder and creates a new note in Apple Notes for each new PDF file, then adds the PDF file to the note. Or take all the PDF files that you manually select, etc. (there are tutorials for Shortcuts on YouTube).
Apple notes uses its rich text format, that is incompatible with everything else, including Markdown.
However, Apple Notes did get improved PDF support recently, did it not? And with reMarkable connect, you can connect the synching-feature to the iCloud drive and store all your handwritten notes as PDF. Once there, you can add them to Apple notes.
You can make a Shortcut that takes all new PDF files in a (iCloud drive) folder and creates a new note in Apple Notes for each new PDF file, then adds the PDF file to the note. Or take all the PDF files that you manually select, etc. (there are tutorials for Shortcuts on YouTube).
That’s a shame then , sounds like too much work to get it working with notes