Not a true TR. But happened whilst I was in the SYD Flounge waiting for a flight.
I noticed a bag fall off one of the luggage trailers being pulled to a plane (the plane is in the background).
The driver didn't notice. Other staff came and went with many just driving around it.
Then eventually someone came and moved it off where vehicles drive.
Nobody seemed to associate the fact that, just may be the bag could belong to the plane getting ready to load (and which baggage was being loaded) nearby.
The bag was collected and thrown into a van and then they drove off.
I hope it found the right owners.