Can't get one pod to talk to another pod (inter-pod communication not working)

I'm managing a Kubernetes cluster and want Pod1 to make API calls to Pod2 and Pod3 (but Pod1 - Pod3 fails!):

1. Pod1: A Jupyter Notebook environment to test connections.
2. Pod2: An Express.js app running on port 8000, exposed on port 80 via the express-backend-service.
3. Pod3: A python scrapy application with ScrapyRT listening on port 14805, exposed on port 80 via getcookie-14805-service.

Pod2 Service and Deployment (express-backend-service):

express-deployment.yaml:

apiVersion: apps/v1kind: Deploymentmetadata:  name: express-app-deploymentspec:  #...  containers:  - name: express-app    image: privaterepo/myproject-backend:latest    ports:    - containerPort: 8000    #...

express-service.yaml:

apiVersion: v1kind: Servicemetadata:  name: express-backend-servicespec:  selector:    app: express-app  ports:  - protocol: TCP    port: 80    targetPort: 8000  type: ClusterIP

Pod3 Service and Deployment (getcookie-14805-service):

getcookie-14805-deployment.yaml:

apiVersion: apps/v1kind: Deploymentmetadata:  name: getcookie-14805-deploymentspec:  #...  containers:  - name: getcookie-14805    image: privaterepo/myproject-scrapy:latest    ports:    - containerPort: 14805    #...

getcookie-14805-service.yaml:

apiVersion: v1kind: Servicemetadata:  name: getcookie-14805-servicespec:  selector:    app: getcookie-14805  ports:  - protocol: TCP    port: 80    targetPort: 14805  type: ClusterIP

Issue:

I can successfully send requests from Pod1 to Pod2 using the service name http://express-backend-service/api. However, when attempting to connect to Pod3 using a similar approach, I get a connection error.

Here's the Python code snippet used in Pod1 to connect to Pod3:

def getCookie(userId):    endpoint = 'http://getcookie-14805-service.default/crawl.json?spider_name=getCookie&url=http://images.google.com/'    post = {"request": {"url": "http://images.google.com/","meta": {'userId': userId},"callback": "parse","dont_filter": "True"        },"spider_name": "getCookie"    }    try:        response = requests.post(endpoint, json=post).json()        return response['items'][0]['finalItems']    except Exception as e:        print('getCookie error:', e)        return Noneuser = '6010dga53294c92c981ef3y576'getCookie(user)

Error received:

ConnectionError: HTTPConnectionPool(host='getcookie-14805-service.default', port=80): Max retries exceeded with url: /crawl.json?spider_name=getCookie&url=http://images.google.com/ (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7fde7a6cc7f0>: Failed to establish a new connection: [Errno 111] Connection refused'))

Why can I successfully make calls from Pod1 to Pod2 but not from Pod1 to Pod3?

I expected the Kubernetes services to facilitate inter-pod communication. Do I need additional configuration?