Originally Posted by
SpringHeeledJack
Perhaps it was that the THY was going a bit faster and was 'catching up' with the PIA 777, because from my viewpoint the time gap from one to the other passing was very short. On reflection, no more than 30secs, perhaps less.
WebTrak supports that conclusion.
Although they were a minute apart over Hatton Cross, the PIA didn't accelerate appreciably and by the time they were over Richmond Park, the THY was only about 30 seconds behind it and travelling 50 kts faster, hence the subsequent vectoring by ATC.