The President apparently gets his daily briefings as memos rather than in person the way other presidents have done. Seems they pile up unread. WaPo reported 2 years ago: "During his first 1,225 days in office, Obama attended his PDB just 536 times — or 43.8 percent of the time. During 2011 and the first half of 2012, his attendance became even less frequent — falling to just over 38 percent. By contrast, Obama’s predecessor, George W. Bush almost never missed his daily intelligence meeting." That explains a lot.
“. . . the former president held his intelligence meeting six days a week, no exceptions — usually with the vice president, the White House chief of staff, the national security adviser, the director of National Intelligence, or their deputies, and CIA briefers in attendance. Once a week, he held an expanded Homeland Security briefing that included the Homeland Security adviser, the FBI director and other homeland security officials. Bush also did more than 100 hour-long “deep dives” in which he invited intelligence analysts into the Oval Office to get their unvarnished and sometimes differing views. Such meetings deepened the president’s understanding of the issues and helped analysts better understand the problems with which he was wrestling.”
Like or hate Bush, he was more engaged and relied on a stronger base of knowledge than Obama, who seems to believe he knows more than everyone in the room, or the world.