I have noticed a pattern by YouTube's algorithm with long videos. When I play a long video, for example synthwave music to get myself nostalgic with the '80s,

I have noticed a pattern by YouTube's algorithm with long videos. When I play a long video, for example synthwave music to get myself nostalgic with the '80s, I can see the suggested videos on my right are either of the same range or even longer than expected! You cannot imagine how many diamonds I have discovered like that, which makes me very happy! ^_^