Narrative Connection
How these two moments in the story relate
Why These Connect
The narrative assertion
"The Doctor's partial failure in the pyramid machine allows the Great Intelligence to survive as a disembodied consciousness in space, directly enabling its later reappearance to possess Nyssa and deliver a warning in the Fifth Doctor's era."
inferred by llm_cross_episode_character
Why This Matters Across Episodes
The longer arc this connection carries
This connection traces the Great Intelligence's arc across Doctor Who: the Second Doctor's incomplete victory leaves the entity intact, and it returns in a later regeneration to continue its influence. The explicit statement from Anne ('It's still out there in space somewhere, flying around?') and the Doctor's frustrated 'I've failed' set up the ongoing threat that materializes in the possession of Nyssa.
About Causal Connections
A directly causes B. The first event sets forces in motion that produce the second. These are the load-bearing connections of plot--remove one and the story structure collapses.