Narrative Connection
How these two moments in the story relate
Why These Connect
The narrative assertion
"The Brigadier's phone call confirming Jo Grant's abduction (Part 3) directly causes the Master's revelation that she is being reserved for the Keller Machine's influence (Part 4)."
inferred by llm_cross_episode_character
Why This Matters Across Episodes
The longer arc this connection carries
The immediate confirmation of Jo's abduction in Part 3 creates direct stakes for Part 4, where the Master weaponizes Jo's captivity as leverage against the Doctor.
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.