Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Ling-Tau Delivers Kublai Khan’s Urgent Orders
S1E18
·
Rider From Shang-Tu
To
Kublai Khan’s Urgent Summons Disrupts Plans
S1E18
·
Rider From Shang-Tu
Why These Connect
The narrative assertion
"The arrival of Ling-Tau with Kublai Khan's orders forces Marco Polo to change his plans and travel to Shang-Tu immediately, creating urgency and altering the Doctor's access to the Tardis."
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.