Could The Struggle mean life? Being Outside the Struggle would then mean virtual state like Infomorph or Sleeper.
Intruders seek to corrupt the Flow of Vyraj and the Domain of Buyan.
Koschoi Fun fact, beside being powerful wizard or deity of the underworld or Death itself, Koschoi is refered to as a prisoner or a slave. Also there is a chest, which is buried under an oak, in which there is a rabbit, in which there is a duck, in which where is an egg, in which there is a needle, which is the death of Koschoi, and this oak stands on the Island of Buyan.
As a wild guess, could Koschoi be the Other (from Templar One), and The Convocation of Triglav Outside the Struggle be the Others?
Should we support Drifters then?