Ships _spread out_ over 100,000km will literally cover interstellar distances as a swarm by _traveling to another star_. That's the whole point. A bunch of in

Ships _spread out_ over 100,000km will literally cover interstellar distances as a swarm by _traveling to another star_. That's the whole point. A bunch of insects can swarm a thousand km from the time it forms to when it breaks up, even if the swarm itself is never more than a couple of km in diameter.