[onemoresoop]

For the better, take notes afterwards while listening to a recording and looking at the blackboard snapshots. However, I understand that this cannot be a regular practice due to time constraints but maybe this could be used for the classes that spark most interest, the knowledge crystallizes better with a few passes

[bluGill]

I'm not sure if that is actually better. I seem to recall (but can't be bothered to look up) a study that showed students who read the book twice do no better that those who read it once. Which is to say the first time you see material in some format is when you get the greatest gain. Taking notes the second time through probably isn't worth it, though taking notes from a different source of the same material might be.

[onemoresoop]

I personally used this practice and it helped me tremendously. It freed me from following the blackboard word by word and let me take briefer notes, sometimes incomplete, only to return and redo all the notes comprehensively. It felt like take attending the course twice. However, I only did this for the classes that I was very interested in. For all the others it can easily turn into a waste of time.

[gowld]

You are speculating without justification. Re-reading having no/lesser benefit (a highly-suspect conclusion, given the massive sucess of spaced repetition), says nothing of the benefit of reading once + writing once.

[onemoresoop]

Recording and retaking the notes from the audio/snapshot is actually reinforcing the knowledge twofold, one is recalling the info and then rewriting it. I don't know if this is for everyone (most likely not) but it did work well for me.