Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor proposes splitting the team
S17E23
·
Shada Part 3
To
Romana vanishes into the alien cube
S17E23
·
Shada Part 3
Why These Connect
The narrative assertion
"The Doctor’s attempt to create a safe scenario by having his companions wait outside directly precedes the sudden appearance of the mysterious cube that teleports Romana away, splitting the group against his intent."
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.