Not that easy unfortunately, as 90% of the time, the agent can't see the reward seats we can see online.
I've also called up 100+ times and get the same or similar response each time:
- We can't see the reward seats you see online
- Those reward seats are for new bookings only
- There are no reward seats available (yet as I'm on the phone, I can see them online)
- You may be able to get through to the final step of the booking, but it may / will crash before payment is able to be finalised
etc etc.
I understand wanting to maximise points via a OWA (by adding more and more flights to an already capped itinerary), but sometimes it's just too bloody difficult with Qantas agents.
If only reward bookings could be changed online - that would be a miracle.
Not all of us are Platinum and have the privilege of getting through to Hobart.
I totally get it... I'm also a lowly Bronze and have experienced all of the above with my upcoming OWA. Through sheer perseverance, I've managed to get find an itinerary positioning in Asia for a trip this year and then again in 2024.
Alas, the only way for what the OP wanted to do is the messy method of booking online before calling to add the remaining segments.