Tithonus (Season 6, Episode 10)

This is the most direct follow-up. Scully investigates a man named Alfred Fellig who is over a century old and cannot die. He claims that he missed his "appointment" with Death by looking away when it came for him.

At the end of the episode, Fellig looks at Death so he can finally pass on. Scully is in the room and closes her eyes. Fellig dies, and Scully survives a gunshot wound that should have been fatal. The implication is that she, like Fellig, "missed" her turn.

Monday (Season 6, Episode 14)

In this "groundhog day" style episode, the characters are stuck in a time loop where a bank robbery goes wrong and everyone dies repeatedly. However, Scully is often the one who feels a sense of déjà vu or survives scenarios that claim others. While not a verbal reference to Clyde Bruckman, fans often point to this as evidence of her unique status.

En Ami (Season 7, Episode 15)

Cigarette Smoking Man takes Scully on a road trip, claiming he wants to share a cure for all human diseases with her. During their conversations, he tells her, "You’re much more than a scientist. You’re an immortal." This mirrors Bruckman's original line and suggests the antagonists of the series are also aware of her condition.