Thanks number_6. That is good news. I had forgotten about this part of my planning while talking with the TA this morning looking at all the options. The 7-day ticketing rule is a pain compared with the 1 hour requirement for a DONE4 from SWP.
I am now booked BNE-LAX-DFW-ORD-YVR-HKG-BNE. But could squeeze in a very short DFW-XXX-DFW before heading to ORD, though not sure if it is really worthwhile. However, if its booked as full Y, then even an 89 mile AE flight DFW-ACT (Waco) is going to be 20 SC's each way.
This routing worked out only A$2700 more than the appropriate economy fare for BNE-DFW-ORD-BNE. That is only A$1400 after tax. So I tought that was a very good deal.
Hopefully I can get it authorised and ticketed tomorrow. Also note that I was offered e-ticket for this fare.