Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor pushes forward into infected mine
S10E22
·
The Green Death Part 2
To
Shouting through the trapped mine roadway
S10E22
·
The Green Death Part 2
Why These Connect
The narrative assertion
"The note left by Jo and Bert (planning to find another way out) leads the Doctor to follow their trail in the mine, directly guiding his solo mission and emotional urgency to rescue Jo, tying their survival to his actions."
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.