Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Explosives positioned for city infiltration
S10E17
·
Planet of the Daleks Part 3
To
Doctor disables Dalek to break free
S10E17
·
Planet of the Daleks Part 3
Why These Connect
The narrative assertion
"The Doctor and Codal's discussion of needing a Dalek to test their communication device sets up their readiness to act when a Dalek arrives in their cell."
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.