Can we use a controller inside another?

Answer 1

As in a nested controller? Then it looks like it. Admittedly I don't work much with angular.

http://fdietz.github.io/recipes-with-angular-js/controllers/sharing-models-between-nested-controllers.html
https://docs.angularjs.org/guide/controller
http://www.angularjshub.com/examples/basics/nestedcontrollers/

Answer 2

Thank you ChaoticDawg