The documentation state the following:
```
If you are using multi-region replicas, Railway will automatically route public traffic to the nearest region and then randomly distribute requests to the replicas within that region.

If you are using a single region with multiple replicas, Railway will randomly distribute public traffic to the replicas of that region.

We plan to add more advanced load balancing strategies in the future.
```

Does this mean there's no load balancing occurring between multi-instance over the private network? Only incoming public connections are load balanced?

Most apps expose a single API gateway and everything else is privately networked.