US aircraft maker Boeing Co said it was seeking feedback from Qantas Airways Ltd on a stretched model of the well known 747 long haul aircraft - its answer to the double decker Airbus 380 superjumbo.
Even so, the company continued to showcase its new generation 300 seat 787 aircraft to Qantas and would be "thrilled" if the carrier signed up to the program, Boeing vice president of 787 sales John Feren said.
"Their fleet studies are beginning to consider what the alternatives are," said Mr Feren, who was meeting Qantas executives in Sydney.
"They have (also) expressed an interest to us in the Boeing 777-300ER and we have just mentioned this airplane to them, 747 Advanced.
"It's fair to say that Qantas is collecting data and is analysing the situation."