I have a friend who may be joining us in November, and her connection times are short both coming down and returning, through CLT. She has an illness that makes breathing difficult, so running through the airport is not going to happen. Does anyone here have any experience with the wheelchair service in CLT? Is it reliably on time? Her connection on the way down is only 40 minutes, and from experience, I know that the two gates are both at the ends of different spokes of the wheel in CLT.