Actually, the open warfare at OHare is alive and well. And has been for the last 20 years.
They are in the process of totally rearranging most of the runways at O’Hare. In prior years it was a 1940s style set of overlapping pickup-sticks pointing every which way. When they are done it’ll be like ATL or DFW: 6 runways abreast spread out across a 2-3 miles of width all pointing the very same way.
Which means that now the planes are flying over just as many houses as before, but they’re different houses. The homeowners who are no longer being overflown every couple minutes are very grateful. The ones whose houses used to be miles from the arrival stream and now have airplanes directly overhead every 2 minutes are … less than overjoyed about the changes.
One of the reasons we can’t build new major airports very well these days is we need a blob of land about 2x3 miles and ideally 3x4 miles to put under the airport with (ideally) zero houses within about 6 miles in any direction from the 3x4 mile box. But with lots of freeways already nearby so we don’t have to extend them too far to connect them to the future airport. That’s a tall order.