This wonderful YouTuber has helped me a great deal learning algorithms but the subtitles don't seem to make sense to me, here the subs merged with what I hear:
"... I have told you in one video in asymptotic notation, that cases are no way related to notation. So notations are for the functions cases are the just/gist(?) of type of analysis done on an algorithm."
Here the link right at the position of the video.