He might have been streaming Andy Cohen on Bravo
i will assume you mean he may have let himself get distracted?
(I do not have any idea who Andy Cohen or Bravo may be, something in the line of entertainment maybe? just a guess I apologize if that’s wrong)
anyway, we will probably learn more in the upcoming days or weeks. letting a train go over 100 mph on a 50mph track is very irregular...(and there are devices on most trains to help deal with such things)....perhaps he was struck with a medical problem of some kind, or?