title: Does dynamic_link_first_open event also trigger first_open?
body: <p>Basicly I wanted to count the following firebase events:</p>
  
  <ul>
  <li>app_open</li>
  <li>first_open</li>
  <li>dynamic_link_app_open</li>
  <li>dynamic_link_first_open</li>
  </ul>
  
  <p>I thought, that usually only one of this events is triggered when a user opens the app, depending on if he/she comes through a dynamic link or not and if he/she opens the app for the first time or not.
  But now I detected, that I have some first_open and dynamic_link_first_open events with the same app_instance_id with only 2-10 seconds difference in their timestamp. Does that mean, that if a user open the app for the first time through a dynamic link both dynamic_link_first_open <strong>and</strong> first_open events are triggered? And what about dynamic_link_app_open and app_open?</p>
  
  <p>Thanks a lot!</p>