Delta terminal is excellent for making connections. Yes it is long--1 mile long to be exact-- but it's great for exercising when you have a long layover. There are also moving walkways and an indoor monorail that run the length of the A concourse. The A concourse and the B and C concourses are connected by a psychedelic light & sound tunnel. Don't rush if you don't have to-take it all in! Facilities terminal-wide are excellent with the best dining options in the A concourse although if you like burgers there is a Fuddrucker's in the C concourse.