We will have one day for a day trip out of Milan in September. We will not have a car, so public transportation is my only option.
However, all my research shows that there is no direct connection between Milan and Lake Orta (say, Orta Orta San Giulio or any other place on the lake). Same for Lake Maggiore.
But even with indirect connections - what would be the best/fastest/less complicated way to get to Lake Orta from Milan? what about Lake Maggiore? And - which of these two lakes would be better for a day trip?