Not exactly, the two clients have slightly different implementations. The closest thing would be the ObserveTimeout configuration value which defaults to 1 minute and internally the observe will happen every 500ms until either the timeout is reached or operation succeeds.
More information regarding ObserveTimeout can be found here: http://docs.couchbase.com/couchbase-sdk-net-1.3/#appendix-configuring-the-net-client-library