Fwiw on several occasions I've had packages delivered to the wrong address (e.g. 200 East Main not 200 West Main) that were obviously "redelivered" by whoever lives at that address. This could explain your findings perhaps?
I live in a rural area (this time of year I can only see one other house from my house), and I have had a few delivery people complain that they couldn't find my house when looking for it on East Joy Rd instead of West Joy, but the fact that my address doesn't exist on the other side helps. I also know most of my neighbors and I am pretty sure none of them are walking the packages over.
It is possible that this is what is happening, but I don't think it is likely.
It is possible that this is what is happening, but I don't think it is likely.