Based on the information provided in the extracts, when you update the destination in Airbyte, all connections tied to that destination will be sending data in the updated format. This implies that it is possible to update all connections at once if they are tied to the same destination. However, it's important to note that this might not be the recommended approach in all cases, especially if you are worried about breaking changes or downtime in downstream systems. In such cases, you might want to consider other upgrade paths such as dual-writing or testing the upgrade on a single connection first. For more details, you can refer to the [Upgrading to Destinations V2](
https://docs.airbyte.com/release_notes/upgrading_to_destinations_v2) documentation.