like others have posted, it's always nice to have more like an hour but not at all unusual to have successful 30-35 min connections at CLT. If you are in the back of the plane arriving to CLT you'll be more stressed trying to get off and get moving, but I agree with others that they USUALLY pad their schedule and tons of people make their connections just fine. Prepare a little by having an idea of how many other flights to your destination leave after your scheduled one in case you miss it, so you can use the AA app quickly to rebook if needed. I've made connections there plenty of times that short, but I know others who walked slowly and used the bathroom along the way and didn't hurry, who missed.