BA prices awards per segment when booking BA and/or one partner airline, so if it was EI-EI for example it would be 50k+15k = 65k avios total on one ticket providing protection for delays.

However when combining multiple partners on one booking, a separate multi-partner award chart is used which uses the total distance of 5,994mi which falls into the 4,000-9,000mi band and would be 120,000 avios in J.

See: http://www.flyertalk.com/forum/briti...os-2015-a.html