Just that Chelsea are not running and running. They stick to their positions in defense and are very disciplined. Barcelona need to move the ball faster, and that ball over the top looks dangerous.
Difficult to actually enjoy this. Not really Barcelona´s fault, but pretty much every team try this approach against them and it more often than not becomes a boring spectacle to watch for the neutral if the opponents are good defensively. Yesterday was 10 times the better game to watch.