I've had a number of issues with married segments on QR recently on a BA-issued ticket. Each time, they've needed to go through their behind-the-scenes OW office to contact QR and ask them to unmarry the segments. Takes about 24-48 hours and sometimes some convincing to actually have them do it, but it ultimately gets done. Haven't had to ask QR directly, though based on some RTW customer service I've received from them, I wouldn't have high hopes.

Also, a question for my fellow flying gurus: Now that ex-CAI is basically a thing of the past (BA wouldn't ticket mine, even though I set it up before they stopped them), does anyone know off hand where the cheapest LONE4 and DONE4 fares are out of? Same with LONE5 and DONE5, if possible. Thanks, all!