You can also gain points by helping the FoA while having Arcade as a companion. And there are many things that you can do to do this. Simply talking to him via the companion menu will not do anything to unlock the quest.
You have been granted the wonderful pleasure of having Arcade Gannon as your loyal companion. Do you have to talk to Arcade Gannon to unlock quest? It is possible that Arcade Gannon may stay in the Lucky 38 presidential suite after completing the quest by telling him to stay in Freeside. If one sends Arcade to the Lucky 38 Presidential Suite before entering the bunker and then complete the quest, one can return to the suite and re-recruit Arcade.
