Same here. I've got accounts at two different banks, and when I transfer money from one to the other, it's usually there literally the moment I approve the transaction. Within a second. I don't know if it's just as smooth across (internal EU) borders, but I don't see why it wouldn't be.

It's possible that it does require both banks to have implemented these instant payments. Both side have the ability to delay the transfer, but it's possible that these days they're required to support instant transactions.