So I looked up deltas and found a three year for #827. That drop mentions "The BRIDGE." Apparently, Bankers Bank of the West has an online banking system that can be used as a back up to FedWire and allows access to FedACH, Fed funds, etc. FedWire, FedACH, and a number of other systems are affected by the outage.
https://www.cnbc.com/2021/02/24/the-feds-system-that-allows-banks-to-send-money-back-and-forth-is-down.html
bbwest.com/what-we-do/operations/#settlement