Causal
medium strength
Narrative Connection
How these two moments in the story relate
From
Doctor interrupts crisis with cryptic reassurance
S7E17
·
The Ambassadors of Death Part 6
To
Reegan poisons Space Control ventilation
S7E17
·
The Ambassadors of Death Part 6
Why These Connect
The narrative assertion
"The Doctor's radio contact and impending return directly causes Reegan, disguised in Space Control attire, to connect a hose to the ventilation system of the Decontamination Unit."
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.