Please post a source for that. Maybe there is something in writing to give us a clue as to the thinking.
An updated link to the *Jonah Code*, since the ones at the thread no longer work, for those interested in knowing the truth of what really happened and when - it's way more awesome than what we've been taught btw: The Jonah Code
The above is just one of many studies into the actual timeline. Much information is available online for those who which to pursue the matter.