An interesting theory...
What if Hitler was actually KILLED at Wolf's Lair on that day, and Goebbles and the rest of the SS decided to make everybody believe he was alive? In the movie you don't actually see Hitler after the bombing, you just hear his voice through the telephone, and it's Goebbles who is talking to "Hitler"'s voice.
Now my question is, to all WWII experts: Was any proof that Hitler WAS ALIVE after July 20, 1944?