When I stop Netlogon and KDC service in a DC, I receive "operational errors trying to retrieve replication information" with error code 8341.
When you stop these services used for authentication by user users and member machines, the DC will be unable to contact its KDC and netlogon to authenticate and perform the replication process.
This does not happen in my other environment when I stop these 2 services.
This behavior depend of active directory topology, if the DC is able to contact the KDC of another Dc when it's KDC is stopped , it will be able to authenticate and perform the AD replication.
For your information it's not recommended to keep Netlogon and KDC service stopped, they should be started automatically.
Please don't forget to mark this reply as answer if it help you to fix your issue