Lernt, not only is it not in the CR, it’s not in shiurim/articles online either, for the most part, except rav osher arieli; i don’t know any other maggid shiur who says chidushim and high level lomdus which is posted on the internet or kol halashon
Rav Baruch ber would sometimes tell talmidim who wrote over chidushim that they’ve “written too much” – the person learning is supposed to figure out a lot of the idea on their own. There’s so, so much that you learn in a shiur or by talking in learning that you can’t find in a sefer.