I only have trouble healing at the bees if I have a regen on someone or screw up and use Medica II right before the 2nd push.
Right before the bees, at the pushback I Medica to top everyone off then reposition after the push. My pally tank sister uses whatever that is that prevents her from being pushed back and then flashes the bees and maintains hate as the DD uses LB on one of the bees and they burn it down and switch to the next. I then just do the purple line dance and medica II and DOT the wall.
If we have a good enough damage setup we ignore the bees completely and burn down the wall.
