Originally Posted by jdrtravel

Looks like the answer is no, but you can always try asking in person to see if they will make an exception. FYI, in my experience, priority pass lounges don't care if you are coming or going, if that is an option.

First and Business Class

All First and Business Class passengers traveling on, or connecting to/from, a same-day international flight operated by a SkyTeam member airline have access to a lounge. Lounge access will be provided only at your departure and transfer airports, and not on arrival. For connecting customers, both the domestic and international flights must be operated by a SkyTeam member airline and all segments need to be booked in First or Business Class. Simply present your First or Business Class boarding passes for the lounge agent to validate for admission.

SkyTeam Elite Plus

Regardless of their travel class, SkyTeam Elite Plus members traveling on, or connecting to/from, a same-day international flight operated by a SkyTeam member airline have access to a lounge. Lounge access will be provided only at your departure airport and transfer airports, and not on arrival. For connecting customers, both the domestic and international flights must be operated by a SkyTeam member airline. Simply present your boarding passes and a valid Elite Plus membership card for the lounge agent to validate for admission.
https://www.skyteam.com/en/lounges/sydney/