Maybe during yoga??? I've got one fundamental problem with my thought, what the hell did Rasputin attack if the darkness is what I said. I'll be honest, I don't have a good answer. But for Toland, he seemed particularly obsessed with ir yut and her deathsong, which in grimoire seem to imply the hive ability to survive death of time itself. If the darkness is the death of time, maybe the hive have figured out to survive it, basically eternally undead. So his communication with the darkness might be his realizing how the hive respond to it This would also explain while vex are aligned with the darkness. Their multiple timelines would allow them survival of the end time. The fallen and cabal? They are screwed...like us. Cept we are destiny ;)