Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Sara Defies the Doctor’s Retreat Order
S3E21
·
Destruction of Time
To
Sara’s Reckless Return and the Doctor’s Warning
S3E21
·
Destruction of Time
Why These Connect
The narrative assertion
"Sara's refusal to abandon the Doctor leads her back to him in the corridor; she has decided to help in this crisis."
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.