Question: One location, multiple Docker volumes, same path inside containers

[rheicide]

If there are 2 containers with their volumes mounted at the same path like this:

services:
  app1:
    volumes:
      - volume-1:/data
    # ...

  app2:
    volumes:
      - volume-2:/data
    # ...

And the volumes are backed up with the same location like this:

locations:
  docker-volumes:
    from:
      - volume-1
      - volume-2
    type: volume
    # ...

Will volume-2's data overwrite volume-1's? Do we need to put them in different locations?