In Wagner’s estimation, it takes 13 milliseconds for the brain to process information from the eye, a hundred milliseconds to feel pain. But 13 milliseconds into the implosion, there is nothing left intact of the cylindrical section of the Titan.
“They would have been dead ten milliseconds ago,” says Wagner. “They wouldn’t really feel anything or see anything coming. They would just be instantly dead
Source
I meant when they knew they were going to die before it even imploded
Ah, I misread that, fair point. 👍