Narrative Connection
How these two moments in the story relate
Why These Connect
The narrative assertion
"Nyssa's delivery of the commodious card key and the Doctor’s sonic screwdriver (Episode 23) facilitates the Doctor’s later actions in Episode 24, where he uses these tools (implicitly) to orchestrate chaos against Melkur’s forces."
inferred by llm_cross_episode_character
Why This Matters Across Episodes
The longer arc this connection carries
The tools provided by Nyssa enable the Doctor’s escape and subsequent resistance, creating a direct causal link between the two episodes.
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.