We are looking at an AA connection with 47 minutes (one ticket). You shouldn't have to check in or go through security. If they sell you the ticket like that, I think it's on them to get you on another flight if needed. Not sure I'd do it if it were the last flight of the day, but otherwise I'm considering it. We're thinking of business class, which would get us off the plane earlier. The bigger delay can be waiting for gate-checked carry-ons, so I'd avoid that.