I've rewatched the episode for the third time (thank you OCS On Demand!) and I've just noticed how the transitions between each scene was so perfect:
Jaime in the dark >transition> Cersei in the candle light.
Cersei and Tywin discussing the Tyrell problem >transition> the Queen of Thorns
Olenna and Varys discussing Sansa >transition> Sansa and Maergery.
And so on...