They might have had two different ideas for the setup, tried Idea 1 in the sprint race and when it did not work changed to Idea 2 for both cars based on data from Checo’s car.

It is called individious, there are many hosts you can choose from. In any instance, a youtube link you paste in the search bar gives you that video in individious. If a certain video is not working, you can use “Switch Individious Instance” to quickly jump to another.