Narrative Connection
How these two moments in the story relate
Why These Connect
The narrative assertion
"Susan's revelation of the TARDIS key's location in Episode 17 creates the emotional bond that prompts Ping-Cho to retrieve the key for Susan in Episode 18, which then leads to Susan's late departure and the aborted escape."
inferred by llm_cross_episode_character
Why This Matters Across Episodes
The longer arc this connection carries
The inadvertent confirmation of the key's location in Episode 17 creates a chain of events culminating in Susan's absence during the escape plan's execution in Episode 18, highlighting the emotional and logistical consequences of Susan's decision-making.
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.