title: How to notify the current routed component from previous component when a task execution is completed?
body: <p>Example Scenario: </p>
  
  <p>I am submitting a registration form in one component which takes at least 5 minutes, before the submitting process is completed I am redirecting to some other component, now I want to get the notification from the previous component that the registration process is completed.</p>
  
  <p>I am newbie to Angular, please tell your suggestion to achieve this.</p>