Slow banks would still be a thing, they just cant (be allowed to) process these transactions. Also, the bytes don't really have to flow from A to B. The payloa

Slow banks would still be a thing, they just cant (be allowed to) process these transactions. Also, the bytes don't really have to flow from A to B. The payload is much to predicable. For 8 hours money flows into the account and flows out of the other account at a fixed rate. A daily or weekly validation would be enough. (with automatic fines for not updating the work schedule)