Firsthand experience, I was way better at typing than writing, particularly after they forced cursive only on everyone and permanently ruined my ability to block-write (while cursive never delivered any of the supposed benefits and looks way worse).
The cognitive act of /making notes/ (actual notes) on paper delivered the majority of the benefit. I usually never actually looked at them again.
Similarly, when preparing printed sheets of notes on a topic later, the act of creating those notes (the closer to the exam the better) again forced the processing and short-term memory storage of the information and I //usually// didn't need them.
Ideally there would be a copy of any slides (including snapshots of the 'boards' every few min / just before erasure) and an audio transcript to aid in taking a lecture again, and maybe a historical Q and A session so that the average quality of questions about the material could accumulate higher/more beneficial for the students.