Originally Posted by izzik

In terms of xONEx tickets, AA rtw desk can book codeshares operated by Oneworld airlines as a standalone segment (ie, not connecting) if the segment is either departing or arriving into the US (might even be N America). This is a recent change, according to what I learned.. Last year, one was able to book standalone AA codeshares on QR/BA between Europe and Asia for example.

I was informed that this new restriction is limited to the AA desk, so if you are working with a travel agent YMMV. Also, they said it was dependent on the operating carrier, so it's entirely possible that certain Oneworld airlines would permit this. Obviously it all comes down to money.. typical.