Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Transmat explosion hurls Doctor and Turlough into chaos
S20E10
·
Mawdryn Undead Part 2
To
Doctor dodges identity question in sickbay confrontation
S20E10
·
Mawdryn Undead Part 2
Why These Connect
The narrative assertion
"The transmat control unit explosion at Obelisk Hill (Act 1) directly causes the TARDIS to vanish and strands the Doctor in 1983, leading him to seek the Brigadier’s help (in 1983 Brigadier’s quarters) to resolve the temporal anomaly later in Act 2."
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.