I didn’t say they were managed by ATC, I said the airport has slots. ATC’s role is to help manage the reshuffling when slots are missed, because there’s still

I didn’t say they were managed by ATC, I said the airport has slots. ATC’s role is to help manage the reshuffling when slots are missed, because there’s still finite landing and take off capacity at very busy airports. In both cases it’s centrally managed, rather than a free for all.