Love this Qantas guy! this happened a few months back...
QF793: "Darwin tower gday Qantas 793 ready"
Darwin TWR "Qantas 793 hold short runway 29"
QF793: "Holding short runway 29"
......
traffic we were waiting for is a C210 on a 5 mile final on 29... keep in mind 36 is available...
......
QF793: "tower just out of curiosity, do you always hold heavy aircraft up for lighties landing on the main runway?"
few moments later...
Darwin TWR "ABC change of runway track for right base 36"
... "qantas 793 line up rwy 29"...
This happens all the time though... they dont seem to improve unfortunately as much as I try to stay optimistic!