Call SharePoint REST API through multiple angularjs calls in provider hosted app

I am using a provider hosted app and developing the app using angular js and SharePoint REST API for fetching List data.

I am facing an issue with calling SharePoint lists through multiple cross domain calls to SharePoint REST API. I have 2 controllers calling the same service on different user interactions. The first call gets the data properly but when the user clicks a button to call second controller on a different user interaction to fetch data from a different list i get a request timed out error. I am initiating the SP.RequestExecutor every time the service is called. I am not sure why this is working when i call the service multiple times through one controller but not when i call the service through another controller. Could you please let me know if the above issue you were facing has been resolved? Below is my code sample.

Service Call:

var getRequest =function(listTitle){
 deferred = $q.defer();var executor =new SP.RequestExecutor(appweburl);
            executor.executeAsync({

                url: query,
                method:"GET",
                headers:{"Accept":"application/json; odata=verbose"},
                success:function(data, textStatus, xhr){
                    deferred.resolve(JSON.parse(data.body));},
                error:function(xhr, textStatus, errorThrown){
                    deferred.reject(JSON.parse(xhr.body).error);}});return deferred.promise;};return{
            getRequest: getRequest};
Controller 1:
app.controller("progressController",["$scope","baseSvc","$q","$filter",function($scope, baseSvc, $q, $filter){
   $scope.profiles =[];
                     executeOnSPLoaded(function(){
                      $q.all([baseSvc.getRequest('CandidateList'), baseSvc.getRequest('GeneralSearchDocuments')]).then(function(data){
            $scope.profilesFromSp = data[0].d.results;
           $scope.Candidatedocuments= data[1].d.results;
           $scope.loadData();});});
Controller 2: (Fails when user clicks button to execute this call)
app.controller("documentsController",["$scope","baseSvc","$q","$filter",function($scope, baseSvc, $q, $filter){
            executeOnSPLoaded(function(){
            $q.all([baseSvc.getRequest('GeneralSearchDocuments')]).then(function(data){
                  $scope.documents = data[0].d.results;});});
Load SP.js & SP.RequestExecutor
function executeOnSPLoaded(loaded){var hostweburl = decodeURIComponent(getQueryStringParameter("SPHostUrl"));var appweburl = decodeURIComponent(getQueryStringParameter("SPAppWebUrl"));var scriptbase = hostweburl +"/_layouts/15/";
    $.when(//$.getScript(scriptbase + "SP.Runtime.js"),
        $.getScript(scriptbase +"SP.js"),
        $.getScript(scriptbase +"SP.RequestExecutor.js"),
        $.Deferred(function(deferred){
            $(deferred.resolve);})).done(function(){
        loaded();});}