Narrative Connection
How these two moments in the story relate
Why These Connect
The narrative assertion
"Marco Polo's seizure of the TARDIS key from the Doctor (Ep 19) directly leads to Tegana's ability to control the TARDIS and use it for his own ends in Ep 20. Tegana's theft of the TARDIS is contingent on Marco's earlier intervention."
inferred by llm_cross_episode_character
Why This Matters Across Episodes
The longer arc this connection carries
This connection establishes a direct causal chain: Marco's intervention in Episode 19 enables Tegana's theft of the TARDIS in Episode 20. The Doctor's loss of control over the TARDIS in Episode 20 is a direct consequence of Marco's actions in Episode 19, which severs the Doctor's immediate access to the craft.
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.