Can you stack the Qantas Titanium benefit of 20% extra status with double status offer?

Anyone know if the bonus 20% status credits (that the Qantas Titanium card awards) is also added on top of a double status credit booking (and that booking would be paid for with the card)?

Spoke with Qantas, they said No. Whichever bonus gives you most points applies, not both.
Hope they are right.