Complex sentence: In the aftermath of the conflict, the reader is able to observe Scar remarking on the forces gathering for the upcoming war, during which Atrocitus is shown performing a ritual to discern the location of the Blue Lantern Corps home planet.
Split into simpler sentences: In the aftermath of the conflict, the reader is able to observe Scar remarking on the forces gathering for the upcoming war. During which, Atrocitus is shown performing a ritual to discern the location of the Blue Lantern Corps home planet.