the wildhunt thing is not happening !!

when i was doing abyss there the wildhunt guys were losing hp like when you don't have nod krai characters but my team was zibai, ineffa, xilonen and xingqiu. my rotaion is ineffa E> xingqiu EQ> xilonen EQ> zibai. the team is in ascendant gleam so why the wildhunt is not weakened (although i still killed them on time). Can anyone answer that ?