Connecting between two Morello docker compose containers

Hello everyone,
My project requires two Morello docker compose containers that work at the same time on the same host. There is a communication between them using docker names and ports.
I have created a network and add it to both docker-compose.yml files, I also exposed the ports that I will use to communicate.

Here is the content of one of the files and the other seems similar to it:

# Docker composer file for Morello Linux
version: '3.8'
services:
  primary-morello-sdk:
    image: "git.morello-project.org:5050/morello/morello-sdk/morello-sdk:latest"
    container_name: "primary-morello-sdk"
    volumes:
      - ./shared_folder:/home/morello/shared_folder
      - ./workspace:/home/morello/workspace
    tty: true
    restart: unless-stopped
    networks:
      - morello-network
 
  primary-morello-linux:
    image: "git.morello-project.org:5050/morello/morello-linux/morello-linux:latest"
    container_name: "primary-morello-linux"
    environment:
      - UID=1000
      - GID=1000
    volumes:
      - ./morello:/morello
      - ./shared_folder:/morello/shared_folder
    ports:
      - "30701:30701"
      - "30702:30702"
      - "30703:30703"  
      - "30704:30704"  
      - "30705:30705"
      - "30706:30706"
      - "30707:30707"
      - "30708:30708"
      - "30709:30709"
      - "30710:30710"
      - "30711:30711"
    tty: true
    restart: unless-stopped
    networks:
      - morello-network
      

networks:
  morello-network:
    external: true

The issue is when I try to connect from one container to another using the container name as a host and one of the exposed ports, I receive connection refused.
Anyone could help me overcome this issue.
Thanks in advance for your help.