Metal Gear Ground Zeroes and Metal Gear Solid 5 are separate games

Yesterday at GDC, Hideo Kojima stated that Metal Gear Ground Zeroes and fake-mysterious Phantom Discomfort were really together Metal Gear Solid 5: The Phantom Discomfort, and that Ground Zeroes may be the prologue. We construed that to mean they're one game, but that's not the situation. A Konami representative told GameSpot Ground Zeroes [...]