Narrative Connection
How these two moments in the story relate
Why These Connect
The narrative assertion
"The Cybermat venom forcing an emergency transmat (Episode 18) leads directly to the Cybermen's capture of the Doctor and companions (Episode 19)."
inferred by llm_cross_episode_character
Why This Matters Across Episodes
The longer arc this connection carries
The immediate peril of Sarah's poisoning and the failed transmat (caused by sabotage) results in the Doctor, Sarah, and Harry being neutralized by the Cybermen in Episode 19. The Cyber Leader's plan hinges on their capture, making the earlier medical emergency the catalyst for the later capture.
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.