i have done an upper/lower split and did for example heavy(for me) incline presses and so i hit shoulders with side raises and bent over laterals so i think it depends. sure Barbell rows hit my rear delts too, depending on your hand spacing and over or underhand grip and where you bring the bar too waist or lower rib cage. well i have seen too many advanced guys getting great delt tie ins and detail to not believe they have a place along with diet. I would just like to hear the opinions of the real pros on here and i will listen. I am all ears because they are at a high Nivea..