If they shipped it in a small box, might be lost in a bag anywhere between the two terminals. If you have shipping numbers you can have it traced, but if put in a small parcel box, could be forever. We had a lady rural carrier that bought a used mail jeep to do her deliveries. Don't know where it came from or what office, as she cleaned it out to use, she found a letter from 1945 inside a hidden seat bracket. She turned it in and it was delivered same day, fortunately person was still alive and at same address