I agree there probably is an interesting story, but it’s also worth noting the things that weren’t true back in the 60s. I found some old declassified CIA reports that suggest the USSR controlled 70% of world titanium production, and that this was five times US production. Patents for the processes used in Australian production appear to date from 1960 onwards, and there is also a note that 80% of the titanium bought for these aircraft was rejected due to impurities.

Putting all those things together I would guess that they could not get enough titanium without getting it from the USSR, and that they would have had to use a front company in any event as they had not publicly acknowledged the aircraft’s development.