Remote backup remotely?

Can I create a remote backup from a MyCloud EX2 Ultra device to another Mycloud EX2 Ultra device if it is not on the LAN (though the internet, perhaps)?

FYI - there is another board for EX2 but, yes. WD has a KBA
https://support-en.wd.com/app/answers/detail/a_id/19931
Destination must be able to forward ports 22 and 873.