If 'At the same time or shortly thereafter, Atta-the only terrorist on board trained to fly a jet-would have moved to the cockpit from his business-class seat, possibly accompanied by Omari.' is true, does it logically mean that 'Atta left his seat in business-class to go to the cockpit.' also is?
At the same time or shortly thereafter, Atta-the only terrorist on board trained to fly a jet-would have moved to the cockpit from his business-class seat, possibly accompanied by Omari.###Atta left his seat in business-class to go to the cockpit.