I'm looking to do an LHR-DOH-DPS Avios redemption In J on Qatar through BA. I've posted on the Qatar forum and have got a good response to my questions about aircraft and J seating options, but have a couple more specific to booking through BA:

- Is it possible to have overnight (or more than one night) stopovers one or both ways on a Qatar redemption booked through BA? It doesn't look like it's possible online, but can it be done over the phone?

- Do Qatar J redemptions book into a class that gives lounge access or do they book into the Qatar Business Lite fare class which does not.

- Are there any advantages (or disadvantages) to booking Avios redemptions through BA rather than Qatar direct? e.g. carrier surcharges, Avios rates.