Is there no system in place to ensure that what goes on the conveyor does in fact make it to the end of the conveyor? Seems simple enough to implement with a scanner at each end.Having worked at the FedEx hub I can tell you that packages get “lost” by falling off the conveyor system all the time. If they fall off in a very inconvenient location it may sit there for quite some time before it gets picked up.
It’s kinda hard to explain the why and how but rest assured that many packages are delayed just because of falling off a conveyor and not some malicious force.