Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Wakefield reveals Mars Probe 7’s silence
S7E12
·
The Ambassadors of Death Part 1
To
TARDIS instability exposes Mars Probe crisis
S7E12
·
The Ambassadors of Death Part 1
Why These Connect
The narrative assertion
"Wakefield details the mystery surrounding the silent Mars probe, drawing the Doctor's attention through a television report. This sets the Doctor on a quest to find the source of the mysterious transmission linked to Mars Probe 7."
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.