[Hockey fan]

Not related to your specific item but I ship daily and learned that each Priority delivery scan creates an internal GPS location upon delivery. This isn't anything you can see as a customer but going to my local post office and politely asking the clerk to check the tracking number they were able to find a package I sent. Like yours it was marked delivered but it was actually delivered across town. In a perfect world the person that incorrectly received the package would give it back to a carrier but in my case the carrier retrieved the package from the incorrect address and re-delivered to the proper address. Worth a shot asking a postmaster at a local PO on your end to help you find a mis-delivered package.