Arriving at LGW from TRN this morning, I was rather mystified to find two different six-digit tracking numbers on the label attached by the check-in staff to my (one piece of) hold luggage. One in the box where the flight number and large "LGW" was printed, the other in the box which contained my name etc.; this second number was also printed on the small adhesive labels the check-in staff can remove and put on the bag, and was also the number given on my bag receipt.

I don't think I've ever seen something like this before (e.g. when my bags have been delayed in the past), but am I misremembering? It struck me that there would potentially have been consequences if the bag had been lost.