Observable emits no value

I am new to Observables. I am using a switchMap to loop through an array of Observables from firestore, retriving two streams, combining the outputs of the streams into a new Observable Array.

createSuperPolicy( product:VehicleProducts, vehicle:Vehicle, id:String, policyCertID:String) : Observable<SuperVehiclePolicy>{

    var temp = new SuperVehiclePolicy;
   
    
      temp.policyID =  id,
      temp.vendor =  product.vendor,
      temp.title  = product.title,
      temp.premium = product.premium,
      temp.offer = product.offer,
      temp.reg = vehicle.registrationNumber ,
      temp.benefits = product.Benefits,
      temp.policyCertID =  policyCertID 

      
     

    return  temp as unknown as Observable<SuperVehiclePolicy>
  }

  populateVehiclePolicyList = this.vehiclePolicyService.getPolicies().pipe(
       switchMap((policies:VehiclePolicy[]) => {
         var policyList$: Observable<SuperVehiclePolicy>[] = [];
         policies.forEach(policy => {
          var product$: Observable<VehicleProducts> = this.vehicleProductService.getProductByID(policy.vehicleProductID)          
          var vehicle$: Observable<Vehicle> = this.vehicleService.getVehicleByID(policy.vehicleID)
          var id$ = of(policy.id)
          var certID$ = of(policy.policyCertID)

          combineLatest(product$, vehicle$, id$,certID$)
          .pipe(map(([product, vehicle, pid,certID]) => this.createSuperPolicy(product,vehicle, pid, certID)))
          .subscribe((val) => policyList$.push(val));     
         });
         
         console.log(policyList$)
         return forkJoin(policyList$);     
       })
     )

Calling viewing the contents of the new Array of Observables(policyList$) displays the contents of the array.

Now when I subscribe to populateVehiclePolicyList, as below,

this.displayService.populateVehiclePolicyList.subscribe(((policy: SuperVehiclePolicy[]) => {console.log(policy)}))

Console.log(policy) returns neither a value nor an error.
I am confused as to what is happening.
How can I successfully subscribe to populateVehiclePolicyList, so as to consume the output?