Maybe we do not know the whole story yet since, "The incident remains under investigation". The articles only say the truck collided with the plane. I can see how it may have happened either way.

I can see how someone could drive UNDER a wing then have the box hit the plane. Just like someone driving into a garage with their bikes strapped on top of their car. I just don't understand how you could just drive into a wing when it is right there in front of your face. It could be one of those situations, where the truck and plane were both ready to go, and both had clearance to do their intended, proper maneuver. Then they both started moving at the same time. What I can imagine is the driver, saying at the last minute, " Oh, Snap!!!"

https://abc7ny.com/american-airlines...rport/1710219/

https://www.fox46charlotte.com/news/...tional-airport

https://triblive.com/local/pittsburg...burgh-airport/