One thing, folks. For those of us who are heavily invested in AAdvantage and look for AA codeshares wherever possible....

AA 6421 LHR-DOH is operated by BA and stops for an hour at BAH. When you use it in an xONEx itinerary, it will show there as two flights, LHR-BAH and BAH-DOH with the same flight number. However, it only counts as one segment. (If it counted as two, the itinerary I'm working on now would have 17 segments; and it's already been approved by the rate desk.) I haven't tried the BA flight number to see what happens with it. Since it's over 3,000 miles, I'll get the 2015 bonus from this flight, thus wanted to stay with the AA codeshare.