Narrative Connection
How these two moments in the story relate
Why These Connect
The narrative assertion
"The Doctor's demand to know Jo's whereabouts in Episode 17 sets up the continued urgency around her captivity, which directly leads to the rescue mission and confrontation with the Master in Episode 20."
inferred by llm_cross_episode_arc
Why This Matters Across Episodes
The longer arc this connection carries
This connection drives the overarching conflict: the Doctor's need to rescue Jo (established in Episode 17) culminates in his meeting the Master inside the Primitive City (Episode 20), where the Master's schemes and the Doctor's moral opposition intersect.
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.