From Pluralpedia, the collaborative plurality dictionary
co-conscious (adj.)
Other formscocon (adj.), co‑consciousness (n.), co-presence (n.)
Synonymsco-aware, shadowing
Applies toheadmates, system functions

Co-conscious (also called "co-aware") refers to when multiple headmates are active at once. This is distinct from co-fronting in that these headmates aren't necessarily fronting, they may be in headspace or otherwise experiencing the outside world such as through internal communication.