Just replying again for posterity; I was wrong and that piece from hoselink is incorrect. However, the adaptor from irrigation warehouse linked to previously is I think correct, but for connecting the outlet of the rachio hose timer (since it too is 3/4" Garden Hose Thread) to an Aussie hose. For the inlet, irrigation warehouse also sells this USGT Male x BSP Female 3/4" - Irrigation Warehouse Group Pty. Ltd. which I believe should do the trick.
