Narrative Connection
How these two moments in the story relate
Why These Connect
The narrative assertion
"The Doctor's deduction in Part 5 that the Cybermen's true objective is not destruction of the Wheel but something more insidious (weaponization) directly leads to his realization in Part 6 that they plan to poison the air (via Gemma's warning)."
inferred by llm_cross_episode_arc
Why This Matters Across Episodes
The longer arc this connection carries
This connection carries the central conflict arc forward: the escalation from 'infiltration to weaponize materials' to 'attempting to poison life support' shows the Cybermen's strategy evolving from covert sabotage to direct mass extermination. The Doctor's changing understanding drives the immediate defensive priorities in Part 6.
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.