It's extremely funny to watch the banks generating their own problems just because they want to be hip but don't understand technology.
They disregard Bitcoin because it's a threat for their business model and want to make their own centralized blockchains, failing to understand that "Blockchain Technology" makes zero sense for their use case. Now - surprise, surprise - they discover that using a blockchain make their business more complicated and less efficient...
Centralized, private blockchains make no sense at all. The only reason for Bitcoin using a blockchain is enabling its core feature: decentralization. If banks want to remove decentralization, they can use a centralized database which is far more efficient than a blockchain for the tasks at hand.
But just let them waste some money for their dying business model...
ya.ya.yo!