Deep Conversation is an Adventure taking place on Nessus. It is unlocked in tandem with all Nessus adventures after completion of the mission Six. The adventure does however bear narrative relation to Hack the Planet, as Failsafe during her decade of imprisonment by the Vex would have had ample time to authenticate Vex logins used during this adventure, as well to meet "a fellow prisoner" that may have been Osiris.
During the course of Deep Conversation the player uses a login fabricated by Failsafe to access the Network of the Unidentified Vex collective and retrieve what information they can. Information obatained includes reports on Cabal fleet movements for Zavala, mentions of the Vex's inability to simulate Light, and hints of the First Program. The Vex are quite receptive to Ghost, and seek to entertain his querries, to provide him a "holistic perspective" and to encourage him to "come home", though what is meant by this, and whether this was an invitation to the forged Vex login or to Ghost himself is unknown. The adventure concludes with Osiris sending his regards, rendering the activity part of the prelude to the Curse of Osiris expansion.