Narrative Connection
How these two moments in the story relate
Why These Connect
The narrative assertion
"Vicki's absence (due to her choice to stay with Troilus) in Episode 9 creates the power vacuum that allows Odysseus to seize the TARDIS unopposed, escalating the threat to the Doctor and the group."
inferred by llm_cross_episode_character
Why This Matters Across Episodes
The longer arc this connection carries
Vicki's departure with Troilus is the enabling condition for the TARDIS's capture. If she had remained with the group or forcibly been taken by the Doctor, Odysseus wouldn't have found the TARDIS unguarded. This shows how a companion's personal arc has structural consequences.
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.