Why can the main characters (Zavala, Caiatl, etc.) hear other characters Nightmares over the comms when they are not even physical manifestations and speak (afaik) directly into the mind of people. You can't tell me a nightmare on the Leviathan can speak to someone on the earth distance-wise.
So, what is the lore explanation for that?
-
Could be because at the beginning of the season Eris did a binding spell that bound us eris crow and Zavala together so we can hear them all