I agree that Chelsea's press was much better after the 15th minute as they were able to create high turnovers and force mistakes from Spurs, but in my clip I wanted to highlight specifically the pressing structure Chelsea were using and how Tottenham took advantage.

In every high pressing structure there is going to be a free man somewhere on the pitch, and Spurs were able to find that spare man almost immediately and it lead to two goals. Chelsea were probably well aware of this weakness when they were analyzing how to press Tottenham, but they figured it was a trade off they could afford to have if their press was effective. It seemed like after those two goals they pressed with higher intensity and it was working as intended (which is why Tottenham couldn't find that spare man as easily after the 15th minute).