Narrative Connection
How these two moments in the story relate
Why These Connect
The narrative assertion
"The Doctor's absence due to the sewer mission in Episode 17 (referenced) directly leads to the urgency of the Cyber-bomb crisis in Episode 18, where his stolen bomb is uncovered."
inferred by llm_cross_episode_arc
Why This Matters Across Episodes
The longer arc this connection carries
The Doctor's infiltration route in Episode 17 (which requires his physical absence from UNIT command) sets up the later revelation that the Cybermen now possess a bomb he designed. This causal link ties the Doctor's actions in Episode 17 to the heightened threat in Episode 18.
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.