Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Catastrophic collapse of Mentalis core
S16E24
·
The Armageddon Factor Part 4
To
Romana assembles final Key piece
S16E24
·
The Armageddon Factor Part 4
Why These Connect
The narrative assertion
"The destruction of Mentalis's control center forces the Doctor and Romana to flee to the TARDIS as the Marshal continues his advance. This retreat leads directly to their assembly of the Key to Time in an attempt to neutralize the Marshal's threat and the unstable time loop they create."
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.