Difference between the different HTML and css freecodecamp tutorials on YouTube

Hey guys,

Just regarding this video from free code camp :https://youtu.be/mU6anWqZJcc
What is the difference between this and the two separate HTML AND CSS tutorials here
(can’t post css tutorial here as I’m a new user with 2 link limit but the video is in the same play list)
in terms of the fact that the full guide is 11hours long and the two guides combined is about 4 hours.