The TBIT oneworld Business and Qantas First lounges are accessible under standard oneworld access criteria. Qatar Airways is a oneworld airline.

Regardless on Qatar's arrangement with the Maple Leaf lounge in T-2, if one is flying outbound on QR in the appropriate class of service or has the requisite Emerald or Sapphire status, one can access the Admirals Club in T-4 (however, it has capacity limitations due to refurbishment) or the Flagship Lounge within - or the TBIT lounges.

Next Wednesday, I will arrive LAX on AA, proceed to TBIT via the very convenient airside connector and dine at the Qantas First lounge before I proceed to T-2 to fly out on Qatar Airways. Admission will occur based on my AA Executive Platinum/ OWE status and flying out on a longhaul oneworld flight.

See http://www.flyertalk.com/forum/ameri...eb-2016-a.html for T-6/4/Eagle's Nest - TBIT airside connector.