How close are the silos?

New to the series, just started season 2, so I'll try to be brief and spoiler free as possible, or ill use hidden text...

When we get an overhead of the outside, we see multiple silos, and I just heard "solo" say there were 50. But they look so close together, and they are hollow, thus they are echo chambers essentially. even if well built- shouldn't some of the silos hear the others? when they shut off the generator in season one, if just ONE of the neighboring silos was online- they would have felt and heard it.. so unless their all dead- Am i just overthinking the mechanics?