Its called people don’t want to work with their cohealers. It’s being a bad player plain and simple. Not understanding isn’t really an excuse especially if it’s max level content. Not working with your cohealer is a bad player. There are two healers if you are Astro and the other is let’s say sch you should be in diu. Shields don’t stack. Actually had a player on here say double diu astros is okay because he can solo heal. No, that’s bad play. People need to learn to adjust to the group you are working with. I’ve ran double sch and you need to talk and work together in those situations so you aren’t overlapping. There is no reason a Astro who has two stances can’t swap. But that’s just me, I believe in working with your team and not being a hindrance to them.