As far as I know, synergies are active on AW defense teams, right? Cap IW has debuff purification in his sig ability, when paired with a skill champ... So yeah, most likely, he purified the stun and immediately went for sp3.
Ok. They used to be, shows how long I haven't been playing AW... Well, I'll say bug, then...
Ok. They used to be, shows how long I haven't been playing AW... Well, I'll say bug, then... You haven't been playing AW since 2016? In my current memory, synergies have never worked in AW.