Please help me get this right,

An overlay network in swarm mode allows cross-node containers to be able see each other as on the same network.
Is that right?

So if I had the following setup:

• swarm-mode cluster of two similar nodes M (manager) and W (worker)
• two containers CM and CW running on nodes M and W respectively
• CM depends_on: - CM:target
• both containers are connected the an overlay network OVNET

Would I be able to ping target from CM? If not, why?

Demo: docker stack deploy -c test.yml test where test.yml is as follows:

version: "3"
services:
  CM:
    image: alpine
    command: sh -c 'ping CW'
    depends_on:
      - CW
    networks:
      - OVNET
    deploy:
      placement:
        constraints:
          - node.role == manager
  CW:
    image: alpine
    command: sh -c 'ping localhost'
    networks:
      - OVNET
    deploy:
      placement:
        constraints:
          - node.role == worker
networks:
  OVNET:
    driver: overlay

Thnaks in advance!