Totally confused about guilds

Raventrob

Can someone explain what the heck overlapping damage in raids is? I'm confused about when people say the big hitters should go first so they overlap damage and weaker players should wait for second phase. I just don't understand the strategy.

kello_511

If 5 people all attack at the start of the raid and do 90% of p1, that damage "overlaps" as the end result would leave you at the start of phase 2.

It leaves more of the easier phases for the rest of the guild to attack.