[imhoguy]

USD transfers even within same non-US based bank let's say same example in Poland is done with SWIFT, but unlikely it goes thru NYC bank as the cost is none and the transfer is instant. SWIFT is used only for addressing and accounting in such case.

[PeterisP]

Within the same bank it's just internal accounting. But when two different banks are involved, an USD transfer generally goes through USA.

[dogma1138]

No it doesn’t, https://en.m.wikipedia.org/wiki/Eurodollar.

Not to mention that since the USD is a CLS/FCC currency you can perform correspondent banking transactions with it without having any government involved in the process.