Comment by stall84

In any event, unless the weather was IMC, where neither aircraft can see because of weather/cloud, which I'm deducing is not the case if they were allowed to maintain visual separation, the ultimate responsibility for maintaining separation is with the pilot(s) .. But as I posted, we should not have this happen anywhere in the United States in 2025 & much less the nation's capital. Hopefully DOT and FAA get to work, but I have a feeling that will be the end of DCA's usefull life as a major passenger airport.