Narrative Connection
How these two moments in the story relate
Why These Connect
The narrative assertion
"The Doctor's discovery of Romana's peril in Episode 11 (spider venom) directly leads to his urgent investigation of cellular evidence in Episode 12, where he identifies spider remnants in the marsh creatures' cells."
inferred by llm_cross_episode_arc
Why This Matters Across Episodes
The longer arc this connection carries
This extends the conflict arc: the Doctor's responsibility for Romana's safety drives his scientific inquiry, which then leads to the revelation of shared ancestry—a moral dilemma about his own role in the Starliner's fate.
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.