Inter-System

Inter-System:Inter-system describes events, activities, conversations, etc. that occur within or between two or more systems, mostly in shared reality.

Related Terms
Anything occuring within a system may be described as intra-system.

Term Origins
Inter- is "a prefix meaning 'between,' used in the formation of compound words." A system is a collection of headmates in the same brain/body. Therefore, inter-system refers to things occurring between collections of headmates.