Originally Posted by
cayohueso
I've connected in Miami with a 45 minute layover many times and it's doable and not especially stressful other than the aforementioned overhead bin space. You can hop on the Skytrain to move between gates pretty easily if yours are far apart.
Also you can pretty much walk from end to end (low Ds to high Es) in 20 minutes. I almost never bother with the SkyTrain.