I had a package 'fall off the truck' a few scans after it entered the USPS system. A month later it scanned at a Chicago sorting center, and was delivered a few days later.
Another recent package was said to have been delivered, but wasn't actually in my mailbox until the following day. Maybe my neighbor redelivered it for me.
For the longest time our local carriers would deliver to 2330 Someplace Street instead of our address at 2030 Someplace Street. Luckily the neighbor was honest though it was really hard when they delivered my 55lb office chair in a box too big to fit in my car, but that was FedEx of all people.
Another recent package was said to have been delivered, but wasn't actually in my mailbox until the following day. Maybe my neighbor redelivered it for me.