Can vault server and vault agent be placed in different K8S namespaces?

Hi
The documentation examples (those I know) present server and agent together in the default namespace. According to various clues in documentation and mailing lists, it might be possible to use separate namespaces. I did it, but the annotations have no effect, no container is injected, no error in logs, the configuration is totally ignored.
So :

  • Can vault server and vault agent be placed in different K8S namespaces ?
  • If, yes, could you advice on how to do it, are there any traps and tips ?
    Thanks a lot