Quick pointer for a certain pair of Delta pilots:
The long strip of asphalt fringed by white lights is called a runway. It’s for landing, or taking off.
The long strip of asphalt fringed by blue lights that’s often found next to that “runway” is called a taxiway. As the name implies, it’s for taxiing the plane onto and off the “runway”.
Try not to confuse the two. The people using the taxiway for its intended purpose don’t usually expect a fully-loaded 737 to claim the right-of-way at 130 knots.
Seriously: that was an incredible stroke of luck, the taxiway being clear at a busy airport like Atlanta/Hartsfield. Planes that taxi into position for takeoff are generally chock-full of fuel and passengers. If the landing plane had collided with some hapless Delta 737 ambling down the taxiway, there would have been close to 400 fatalities on the ground. Frightening.