@Don't Hang Up
However as a general rule, the chances of being the same range from the satellite after one hour of flying... Well it's possible but one heck of a coincidence.
Agree entirely - but I was just pointing out that there other possibilities than same arc=>stationary=>landed=>hijacked, etc., etc....
And certainly calculations of likely positions from the ping history will be messy and fraught - but it sounds as though they have little else to go on at the moment, unfortunately.