What happened was that I fluked when going through (TSA) security at the airport and forgot my laptop until I was in the air. At that point contacted the Swiss airline and they sent a message to ground. No worries, was the reply: your laptop has been found by TSA. This was in a flight from the US to Germany.
Once in Germany I ofcourse immediately started checking with TSA, to see if they got it. I could not get through at first, and the airline and their bagage handler Swissport was also at a loss. Then in the afternoon TSA reported the laptop had been given to an airline bagage handler representative, but still no word or way (tried zillions of telephone numbers) to actually know where it would go.
I knew I put my name+phone as a sticker to it, but it was not used. TSA looked at the name at the lock screen, and that was how they assigned it to my name, and gave it to the bagage handler. But still: now my laptop was with some Swissport handler and I had no way to get it back, nor did they contact me.
TSA did provide me the name of the person, so I got bold after a while of annoying failed attempts to contact Swiss or Swissport: I looked up his name on Facebook (I still had an account then...) - and surely: a person was found that also is a Swissport employee. I sent a private message explaining my ordeal, and he replied that indeed he collected it from TSA. After confirming some details he said the laptop would be arriving in Germany the next day, and it did ! I hate facebook, but to this day believe that hadn't I taken matters in my own hand, I would still be looking for it, as the airline is pretty much hands off on this type of service - not all employees are too, as it turned out, no matter their shitty pay.