Hi! My shortness of breath would usually go away if I took an ativan too. Presumably, that settled the anxiety that may have been a factor in my reflux as well as relaxing my esophageal muscles enough to stop the cramping that I couldn't feel as cramps but only as the shortness of breath. It does sound like this is not a condition that can genuinely hurt you, and that's always a relief.
To be honest, my sense of not being able to inhale deeply enough and getting a little short of breath while talking was, I think, a combination of my physical reflux and then my mind amplifying my concerns about breathing into anxiety and sometimes panic. So I'm convinced my difficulties are compound, but I'm also finally okay with the fact that they can't physically harm me.
But anyhow, I sure did have both of your symptoms, with the shortness while talking much more rarely than it seems you do.