Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Ben and Polly Accidentally Board the TARDIS
S3E45
·
The War Machines Episode 4
To
Doctor Hides TARDIS Key from Companions
S3E45
·
The War Machines Episode 4
Why These Connect
The narrative assertion
"After Polly notices the police box, Ben remembers the key needs to be returned, prompting them to decide to investigate."
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.