The Aussie and the Kiwi are telling two very different monetary policy stories right now, and the divergence is starting to show up clearly in the cross. The RBA held its cash rate at 4.35% in August, but the hawkish tone that once dominated has faded fast: Q2 inflation cooled to 3.9% from 4.1%, prompting Goldman Sachs to abandon its call for one final hike this year.