The top four banks in NZ are all subsidiaries of major Au banks.
Those top four banks in NZ are all majority owned by US shareholders.
Australasia is monetarily and militarily a tribute state to the USA.
Have been since WW2 when we signed over from subservience to the British Empire to US fealty.
Here in NZ it was symbolized by the 1967 transition from coinage denomination moving from Pounds and Shillings to Dollars & Cents.
Monetary and military power structures are very closely aligned.

You got any info on that? It's the first I've heard of it.

Australian banks are mostly majority owned by US shareholders.
Australians mortgages mostly profit American banks.
Australia is monetarily and military a tribute state to the USA.