Well, that's what he said.
Have you ever tried to take dictation? I suck at it.
And if that's the way it really happened, why did Gabriel have to keep repeating himself? Did Mohammed have a short attention span, or trouble remembering what had been said to him? One would think that an Angel of God could speak clearly and concisely.
My understanding is that Mohammed announced Allah's communications a little by little, a new bit often popping up whenever it was convenient to the movement.
Almost like how the National Enquirer breaks a big story.