For this reason I would doubt if a Schengen-Schengen 25 min connection as suggested here ever could become the norm. Sure, if you arrive and go from say B-gates or C-gates this could work. But if you have the bad luck of arriving at end B-gates and must leave from end D-gates.....(and, like me, unable to run since a with leg recovering from an accident, and with scores of escalators out of action....)