广州飞奥克兰 澳洲转机 需要过境签吗

在qantas网站上买 广州飞奥克兰机票 在悉尼转机（广州-悉尼 南航，悉尼-奥克兰 qantas），中途停留3小时，究竟是否需要过境签，我看了澳洲移民局的官网，说8小时内可以免过境签，但qantas客服说要（btw 态度非常恶劣），求教各位大虾，急急急！！！
Eligible travellers must be able to meet the following criteria to be permitted to transit Australia without applying for a visa. Travellers must:
•enter Australia by aircraft
•hold a confirmed onward Booking to leave Australia to travel to a third country on the same or another aircraft within 8 hours of arrival in Australia
•hold documentation necessary to enter the country of destination
and
• not need to leave the airport transit lounge except to continue their journey.