Acccess to Qantas or Oneworld business lounge if you fly with Jetstar?

I am Gold Qantas FF, just wondering if you are eligible to acccess Qantas or Oneworld business lounge if you traveling with Jetstar or Jetstar Asia. I think the answer is NO but just would like double confirm. Thanks

You will have access to any Qantas operated Qantas Club/International Business lounges in Oz and abroad (e.g. SIN where Jetstar Asia/3K operates from), regardless of the class of travel. If you were a non-QF oneworld sapphire member then that would have been a different story.