Because Wikipedia is a trusted source
Qantas announced that Airnorth has give an extansion to fly 5 ERJ 170 and ERJ 190 for Qantas from 2016
(WTF is an extansion?)
Reading into this, I would say that the orders that Airnorth have for more E-Jets (if wikipedia can be trusted) would just further the codeshare agreement that QF and TL have.
Or someone is stirring ass gravy.
Maybe this is part of the December to Remember?
Fuel-Off