This may have something to do with Hitler's bohemian lifestyle inherited from his student days, in which he would stay up very late in the evening, sometimes till 2 or 3 in the morning and not get up until sometimes as late as 2pm, and would have meetings until the late afternoon. He spent his nights usually watching films (usually 2 a night), newsreels , reading or talking to his staff. He was notorious for waking up people and having them brought to the Berghof to talk about nothing in particular. It became an unspoken rule among his staff and entourage never to ask him questions after a certain point; lest they be subject to another hour long rant.
Hitler was also prone to procrastination at times, despite his portrayal as a hotheaded demagogue (which he was); as Ernst Hanfstaengl one of his intimates said
"His staff is usually in despair on account of his procrastination.... He never takes their protests in this respect very seriously and usually brushes them aside by saying, 'Problems are not solved by getting fidgety. If the time is ripe, the matter will be settled one way or another.'"
When faced with a difficult decision and the procrastination worsened, Hitler would withdraw more into himself and usually head to the Bechtesgarden, preferring to go on walks or read alone. These periods of indecisiveness could last days or even weeks, in which he would gloss over and ignore the subject altogether.