Map multiple [k8s] tcp services to a VirtualService

Networking
1

I have 5 backend services which should be connected from a frontend service based on the tcp port. Just to abstract the frontend service from backend, I wanted to use single host name. Please note that only frontend service should be exposed using Gateway. I’m trying to achieve this using the below VirtualService definition (Started with 2 services: backend-svc1 and backend-svc2 and they are running fine)

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: backend-vs
  namespace: default
spec:
  hosts:
  - "backend-svc1"
  gateways:
  - mesh
  tcp:
  - match:
    - port: 18001
    route:
    - destination:
        host: backend-svc1.default.svc.cluster.local
        port:
          number: 18001
  tcp:
  - match:
    - port: 18002
    route:
    - destination:
        host: backend-svc2.default.svc.cluster.local
        port:
          number: 18002

Using the above VirtualService, only backend-svc1 works fine, not the other one.

Next, I tried using the ServiceEntry below:

apiVersion: networking.istio.io/v1alpha3
kind: ServiceEntry
metadata:
  name: backend-svc-se
  namesapce: default
spec:
  hosts:
  - "backend-svc"
  - "backend-svc.default.svc.cluster.local"
  location: MESH_INTERNAL
  ports:
  - number: 18001
    name: backend1
    protocol: TCP
  - number: 18002
    name: backend2
    protocol: TCP
  resolution: NONE
  endpoints:
  - address: backend-svc1
    ports:
      tcp: 18001
  - address: backend-svc2
    ports:
      tcp: 18002

And I accessed the backend service using backend-svc (spec.hosts in the ServiceEntry) from my frontend service. Still no luck. Is it even possible to map multiple tcp services to a single VirtualService?

Kubernetes Version - 1.14 (Amazon EKS)
Istio Version - 1.3.0