Ryu, BVB might be hungry, but you are playing at home and they haven't been that good at all, so I expect you to beat them rather easily, 2-0. No extra time needed.
I don't know. BVB seem to be difficult for Bayern in the recent years even when they are shit. In the hinrunde Bayern barely squeezed a win, even with Dortmund's abysmal form. In the ruckrunde their form is better. Just a few weeks ago it was a lucky 1-0. Dortmund were better on the day. I still think Bayern will win but it wont be a easy win by any stretch.