On the Endwalker full trailer, why do we hear the Shadowbringers motif exactly when Y'Shtola is entering the Studium, the governing body of Sharlayan? SPECIFICALLY the part that talks about the relation between WoL and Emet-Selch (one brings shadow, one brings the light, two-toned echoes tumbling through time...)

Dunno if I'm reading too much into this but... what if this was a subtle hint of something? Of Sharlayan also having Ascian hands in their origins, perhaps...? It wouldn't be too far-off, seeing them as secret-keepers like they are. What do you guys think?