Narrative Connection
How these two moments in the story relate
Why These Connect
The narrative assertion
"Susan’s confirmation of the TARDIS repairs and their imminent escape (Episode 17) causes Ping-Cho to steal the keys (Episode 18), as she aligns with Susan’s desire to leave."
inferred by llm_cross_episode_arc
Why This Matters Across Episodes
The longer arc this connection carries
Ping-Cho’s theft of the key is a direct response to Susan’s earlier assurance that they would soon leave. This theft is a critical turning point in the series, as it enables the Doctor’s escape plan and underscores Susan’s influence over Ping-Cho’s loyalties.
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.