Fun data points around my experience with this route:
1. ATL-LAX-SYD on a Saturday. Cleared ATL-LAX a few days out, LAX-SYD at the gate. #1 on the UG list, 4 seats open.
2. SYD-LAX-ATL on a Friday. Cleared SYD-LAX 48 hours out. Don't remember but I think I got LAX-ATL at the same time.
3. ATL-LAX-SYD on a Thursday (SO DUMB) ) didn't clear ATL-LAX, LAX-SYD cleared at the gate. #1 and #2 on UG list, 2 seats open.
I am DM and had Reserve, companion has nothing.
Will be flying SYD-LAX-ATL and back in June/July. Will be PM. Already crossing my fingers.