Whoah. So there were NO alerts for 15 minutes prior to the crash. Compare this with Tesla's earlier statement:
> The driver had received several visual and one audible hands-on warning earlier in the drive and the driver’s hands were not detected on the wheel for six seconds prior to the collision.[1]
This gives a very different impression. They omitted the fact that there were no warnings for 15 minutes. Frankly that appears to be an intentionally misleading omission.
So basically the driver was distracted for 6 seconds while believing that the car was auto-following the car in front of it.