I am looking for a noun of the adjective "integrated", as in, "combining or coordinating separate elements so as to provide a harmonious, interrelated whole."
Integration describes the process that produces this state, rather than the actual state (I think).
Integratedness works but it is a bit clunky and not that widely used.
Example:
The individual parts of the mechanical clock interact with each other and work together to keep track of time. The mechanical clock has high [word I'm looking for].