That's funny, but isn't true. The delays are waiting for gates to open, and at peak hours, getting into and out of the alleys. Landing 27R is about a 5 mile taxi, and that does take time, but not that much. The problem is that United and American are scheduling every gate they have with near-minimum turn times and almost no open gates kept in reserve. One flight delays getting out for maintenance and the inbound is delayed parking. Maybe that inbound has an excessive number of wheel chairs on board, so it takes longer to deplane than planned, so the next flights delay gets longer. No worries, the next one will board faster and make up time! No it won't. The planning is already assuming the plane boards as fast as possible, and when you're moving 200 people, averages kick in and it difficult to improve that number a great deal. Delays stack all morning long with a little break, and again all evening. Meanwhile, out on the taxiways, ground has more planes to control than there is radio time to talk to and the K alley just got blocked by a wide body aircraft push. Anyone parking in that alley now gets to wait ten minutes for a 787 to move off the gate at it's stately pace and start both of those great big engines, run a checklist or two, and for ground to find a home big enough to slide 250' of aluminum into. This airport sucks. Everybody is doing great, the pilots, the controllers, mx, the rampers, but the airport is just way over served for its 1960s terminal configuration.