Narrative Connection
How these two moments in the story relate
Why These Connect
The narrative assertion
"The Doctor's fake taranium exchange (Ep 15) directly results in Chen's forced accusation when the taranium fails to function in the Time Destructor test (Ep 17)."
inferred by llm_cross_episode_character
Why This Matters Across Episodes
The longer arc this connection carries
The fake taranium is the MacGuffin that Chen supplies to the Daleks, and its failure to function is the catalyst for his exposure. Without the earlier deception, the later exposure would not occur.
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.