Narrative Connection
How these two moments in the story relate
Why These Connect
The narrative assertion
"The Doctor's realization of his own mortality and inability to save Peri in time (beat_bfecb6aa80e15bce) directly motivates his desperate quest for the queen bat's milk. This survival mission (culminating in the administration of the antidote, beat_ea2107b0c62ca2bf) drives the entire second act and creates the tension that propels the Doctor to the edge of regeneration."
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.