Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Great Key handover in burning office
S15E25
·
The Invasion of Time Part 5
To
Borusa transfers the Great Key to the Doctor
S15E25
·
The Invasion of Time Part 5
Why These Connect
The narrative assertion
"The Doctor's demand for the Great Key from Borusa (Act 2) leads directly to Borusa's reluctant admission of possessing it and handing it over to the Doctor (Act 2)."
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.