Causal
medium strength
Narrative Connection
How these two moments in the story relate
From
Doctor exploits Krotons' tellurium weakness
S6E21
·
The Krotons Part 3
To
Doctor feigns compliance under Kroton threat
S6E21
·
The Krotons Part 3
Why These Connect
The narrative assertion
"Zoe voices a feeling of being watched, the doctor vaguely notes the sulphur will come in useful. The Doctor then gathers the sulphur, explaining to Zoe it relates to his understanding of tellurium."
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.