Overla network (docker-swarm) shared or separated into nodes?

Question

Docker

Everything is deployed on one machine:
- services
- bus
- statistics
- balancer
It all communicates with each other via an overlay network - suppose mynet
Now it raises a second node on another machine in the local network with the same config.

Question:
If you do not change the name of the network, will it be that all requests are poured into the same network and there will be confusion between the nodes? Or will this mynet network be created for each node and everything will be cooked inside the node?

Unfortunately, I did not find the answer in the documentation, thanks.