When I take notes when typing, I can transcribe the content word-for-word without knowing what I am hearing and without thinking about it.

When I hand write, I am generally forced to either slow down and repeat what I am listening/watching (if an option), or actually think about what is being said, and choose the important parts to write down, or rephrase it in a more efficient-to-write way.

I am taking a course right now and I find repeatedly that I understand the concepts from taking down the notes (many aha moments), and then I remember. I rarely if ever actually look at the notes I take - they are objectively inferior as a product compared to the official course notes or the textbook.

Maybe typing would be efficient for learning if I was bad it - could be an interesting hypothesis to test.