Something I notice more & more over the years, is the lack of instrument scan when the autopilot is engaged. At one end colleagues trying to read the broadsheets during the cruise with the instruments completely obscured. At the lower end flying approaches with autopilot engaged & basically trusting the autopilot to do as it is asked with apparent lack of a proper instrument scan. It doesn't matter if you are handflying or not you still keep ALL instruments in your scan.