Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
The Doctor’s collapse forces a TARDIS intervention
S1E15
·
The Singing Sands
To
Tegana volunteers for the oasis mission
S1E15
·
The Singing Sands
Why These Connect
The narrative assertion
"The dwindling water rations and Doctor's concern directly contributes to Tegana's volunteering to go ahead for water, a decision that places the caravan's fate in his hands."
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.