Narrative Connection
How these two moments in the story relate
Why These Connect
The narrative assertion
"Leela's banishment and alliance with the Doctor (Episode 13) directly enables her presence in the Tesh colony in Episode 15, where she becomes instrumental in securing the Sevateem's retreat and exposing Xoanon's true nature."
inferred by llm_cross_episode_arc
Why This Matters Across Episodes
The longer arc this connection carries
Without her exile in Episode 13, Leela would not have been positioned to mediate between the Sevateem and the Tesh in Episode 15, nor would she have witnessed the Doctor's revelations.
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.