Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Susan’s desperate call echoes unanswered
S2E2
·
Dangerous Journey
To
Ian Spots the Doctor and Susan
S2E2
·
Dangerous Journey
Why These Connect
The narrative assertion
"Susan calling out to Ian and Barbara leads them to hear her, prompting Ian to call out to the Doctor and Susan."
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.