He's not realy explaining it. He is just saying, what if the leftback has the ball and the 10 decide to pressure, how are the others going to react.. etc.
The buildup was way to slow. I don't understand why Mikel was on the pitch all of a sudden. He doesn't add anything if you want to play fast and dominant. Ramires is imo not able to play the role he's given. Way too sloppy in his passing and too panicking when in possession. Luiz's poor passing, using the long ball or just shooting it away like a headless chicken more than once is something I can't comprehend. You can't EVER play a long ball when playing how Chelsea plays and with the players who are on the pitch. The game left me frustrated and I didn't feel any improvements over last year when the team went through a bad period. Ivanovic on the flank is just asking for bad football. I can go on.