continuity
US /ˌkɑːn.tənˈuː.ə.t̬i/
UK /ˌkɑːn.tənˈuː.ə.t̬i/

1.
the unbroken and consistent existence or operation of something over a period of time
:
•
The company aims for continuity in its leadership.
•
There was a lack of continuity in the storyline.