Narrative Connection
How these two moments in the story relate
Why These Connect
The narrative assertion
"Barbara's defiant declaration to abolish human sacrifice (Ep 27) directly causes the immediate need for rescue efforts, as Tlotoxl and Ixta retaliate against her and the TARDIS crew."
inferred by llm_cross_episode_arc
Why This Matters Across Episodes
The longer arc this connection carries
Barbara's public vow to end sacrifice (Ep 27) triggers Aztec authorities' violent response, which includes Susan's imprisonment (Ep 30). This shows the direct consequences of her interventionism.
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.