Sorry to double post but I spotted something unusual about the South American flight path. I copied direct from the OW email and unless I'm reading incorrectly it should have looked more like this, changes in bold:

LHR-CAI-AMM-HKG-MNL-BNE-AKL-SCL--USH-BUE-SLA--BUE-IGR--SAO-LIM-MAD-LHR

??