Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Barbara convinces Ian to investigate
S1E1
·
An Unearthly Child
To
Barbara questions Ian’s stakeout motives
S1E1
·
An Unearthly Child
Why These Connect
The narrative assertion
"Ian and Barbara agree to stake out the junkyard, which leads to their arrival at Totter's Lane and Barbara's initial doubts about their investigation."
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.