Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Team splits under UNIT surveillance pressure
S6E15
·
The Invasion Part 5
To
Policeman warns trio away from manhole
S6E15
·
The Invasion Part 5
Why These Connect
The narrative assertion
"The trio deciding to proceed to the sewers lead to a policeman spotting Isobel descending into a manhole and yelling at her and her companions."
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.