Going From sports in say 2nd and high rev's into Drive brings nearly instantaneous change to say 4th or even 5th gear however the gearbox is already under torque from drive. An easy way to see what will happen shows up if when reversing out of your driveway for example u go from reverse through neutral to drive without stopping backwards momentum the aurion lurches violently and chirps front wheels and its VERY VERY bad for the torque converter, Gearbox CV's the whole drivetrain. Besides when u coast in the aurion it doesnt remain at revs anyways unless u are in sports mode. I have simulated this situation nearly exactly when driving my mums old falcon once a while ago it is on LP Gas and has a changeover switch to go onto petrol which requires u to put the gearbox in neutral coast until the engine splutters then flick it over. I was on cruise control when i switched it into neutral which resulted in the engine revving quickly and me panicking and putting it back into drive which slammed the driveline and made even the ancient XF chirp its back wheels violently.