If it is on libgen, it is not downloaded, but you are given a libgen link. Libgen also redirects you to sci-hub.bz if you search scientific article it doesn't

If it is on libgen, it is not downloaded, but you are given a libgen link. Libgen also redirects you to sci-hub.bz if you search scientific article it doesn't have. They collaborate, but different people are behind these projects.