Control’s central narrative concern — Jesse looking for her brother Dylan who has been imprisoned in the Oldest House since childhood — has a resolution in the main campaign’s final section. But the post-game communications board in the Director’s office contains a memo about Dylan that was written before Jesse became Director, detailing the experiments the Bureau conducted on him while she was searching for him outside.
The memo references a ‘secondary resonance capability’ in Dylan that the Bureau catalogued but did not pursue because resources were allocated to the Object of Power program. The secondary capability is described using terminology that matches the Astral Plane communion language used by the Board in their Hotline communications.
Dylan, in the game’s fiction, may have Board-level resonance that the Bureau detected and suppressed. The memo is a pre-Director document — it was written before Jesse could have affected its contents. It is filed in a folder labelled ‘De-Prioritised Subjects.’
Remedy built a significant unresolved thread about Dylan’s nature into a pre-game administrative memo in the Director’s office. Control 2 is in development. The de-prioritised subject may become a priority.

The environmental storytelling in this game is on another level. Thanks for documenting it so clearly.
The detail work the devs put into areas most players never visit is what separates great games from good ones.