The 737 was right on the end of its ATC slot when it got airborne and I can tell you now that this was not a factor in terms of holding it. It could not get airborne until the 767 had vacated from its backtrack along 14; and the 767 could not vacate 14 until the Cessna had done its touch-and-go. Farcical. The 767 was at a standstill for at least four minutes ahead of the intersection; and the 737-700 had backtracked from the north/south to the end of 32 before the 767 came to a halt. Probably about a tonne of fuel burnt between the two to allow the Cessna to do the touch-and-go, I reckon.