@propduffer
According to the plot in the latest Australian fact sheet, it went VKB VPG VAMPI MEKAR
Clearly passing overhead VPG
MEKAR is about 230 NM from Butterworth, on R285 ( the 200/295R on the "radar" picture is wrong )
If you use skyvector to construct this route it comes up with 460 NM. Together with the right, then wide left turn after IGARI it is about 480 NM in total.
IGARI plus a few miles was at 17:25, short of MEKAR was at 18:22