JSFiddle - React, Tailwind, and code Playground

HTML

<div ng-app="app" ng-controller="ctrl">
  <div ng-repeat="stage in stages">
    <div ng-repeat="step in stage.steps">
      <span>Index: {{$index}}. ParentIndex:{{$parent.$index}}</span>
    </div>
  </div>
</div>

JavaScript

angular.module('app', []).
controller('ctrl', function($scope) {
  $scope.stages = [{
    steps: ['1', '2', '3']
  }, {
    steps: ['4', '5']
  },
  {steps:['6','7','8']}];
})