Ethereum developers monitored the network during the 12-minute window of Ethereum's Pectra upgrade to ensure finalization without forks or client disagreements

Quotes that support claims

The minute they go up to the fork […] they’re not stressed,” explains Nixo, a member of the Ethereum Foundation’s protocol support team. “But it’s like, the one, two, 12 minutes after the fork where they’re watching for finalization, making sure none of the clients are forking off onto other chains or going off onto other forks.”