Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor reveals Kronos true nature to Ruth
S9E22
·
The Time Monster Part 2
To
Doctor deduces crystal is immaterial
S9E22
·
The Time Monster Part 2
Why These Connect
The narrative assertion
"The Doctor’s identification of the crystal as 'Kronos' leads to his deduction that it is physically absent but linked via 'interstitial time,' explaining its immovable glow in the lab."
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.