Germany lacked the final touch in the 2nd Half and Extra Period. But they continued poking away. After every stop Neuer threw the ball forward to attack, which they didn't do in the Group Stage. Most likely because there was no Lahm on the Wing to spring forward
If you added up the total chances. Germany probably had 3 times as many as Argentina. Which was the story of the Tournament for Germany. Just keep poking away and eventually you get a lucky bounce, defense makes a mistake OR great offensive effort.