It seems they found a US correspondent bank, maybe indirectly somehow.
They write "We're thrilled to announce that you can send and receive US Dollars quickly and efficiently via FedACH and Fedwire, thanks to our collaboration with Bridge.xyz and Circle.
Now, you can make US Dollar transfers smoothly and without︀ interruption, along with competitive and transparent fees that make your transactions hassle-free."
When selecting Receive︁ USD, they show "Lead Bank, Main St, Kansas City."