Originally Posted by
lizthegrey
AA does challenge but it is paid. and they dont do challenge on the top tier, as far as I remember. i dont know if BA does challenge. but BA status is pretty easy. 300/600/1500 tier point. one round trip in J (4 sectors over 2000 miles) is already 560 tier points.
it is expected that EI may join oneworld. or if u can fly connecting flight via LHR? or if you are stuck with EI, then credit to BA and go for emerald.