Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor orders Leela expelled
S15E22
·
The Invasion of Time Part 2
To
President slips out to meet Leela
S15E22
·
The Invasion of Time Part 2
Why These Connect
The narrative assertion
"The Doctor’s performative expulsion of Leela creates her status as a fugitive. His subsequent secret encounter with her in the corridor demonstrates the practical consequence of that expulsion — she remains in physical proximity, forced to seek refuge, which enables their later reunion."
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.