Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Ping-Cho steals the TARDIS key
S1E18
·
Rider From Shang-Tu
To
Tegana witnesses betrayals and surveillance
S1E18
·
Rider From Shang-Tu
Why These Connect
The narrative assertion
"Ping-Cho stealing the Tardis key from Marco Polo's journal directly enables her to give it to Susan, facilitating the Doctor's escape attempt."
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.