has a 2 page interview with Hideo,its a good read
Big Boss is in a coma between Ground Zeroes and The Phantom Pain. However, Liquid Snake reveals in the first Metal Gear Solid that Big Boss was in a coma when the Les Enfants Terribles cloning program started, which was years earlier. How many times has Big Boss been in a coma?
There’s only once he’s in a coma, and to explain that you need to play towards the end of The Phantom Pain. There it will come together. You’ll be like “Oh, that’s what happened!”