Narrative Connection
How these two moments in the story relate
Why These Connect
The narrative assertion
"The Doctor's initial confrontation with Romana about their entrapment in E-space (Episode 13) escalates into his desperate search for solutions, culminating in his uncovering of the vampires' fatal weakness via the Record of Rassilon (Episode 15)."
inferred by llm_cross_episode_arc
Why This Matters Across Episodes
The longer arc this connection carries
The Doctor's existential crisis over their trapped status ('We are personally trapped') directly drives his need for actionable knowledge, leading him to delve into the TARDIS archives for solutions. This thread of marooned desperation becomes the impetus for solving the vampires' weakness.
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.