I see the Gearbox Transport is gaining traction.
I would imagine IF ANY significant stress to the box was caused by Transport damage to cause the Gearbox to fail WITHOUT warning. It would start at the Epicyclic Ring or Conical housing. I think the Epi Ring would fail well before the Conical Housing.
This is a more plausible cause than a Sus Bar Event.
AH are going to have to go to extreme lengths to be able to say everything that did after receiving the alleged transport damaged Gearbox, was in no way the root cause of the failure. Common sense would dictate this Box was Eddy Current, & NDT'ed to death above and beyond a normal Gearbox overhaul, or was it?