Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Lang discovers his missing powerpack
S21E24
·
The Twin Dilemma Part 2
To
Doctor challenges Edgeworth's ruthless design
S21E24
·
The Twin Dilemma Part 2
Why These Connect
The narrative assertion
"Lang awakening in the TARDIS and discovering his missing powerpack immediately prompts his search for it, which leads him to change clothes and eventually leave the TARDIS, altering the story's timeline and enabling his later involvement in the base."
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.