Hawkeye & Quake synergy with Hulk
I have a R5 Hulk that I was testing on 5.3.6. I teamed him up with a 4* R4 Hawkeye and a 3* R1 Quake. Hulk has an 85% chance to stun the opponent on special attacks and when combined with Hawkeye-Quake synergy this should be 95.2%. Basically, Hulk should have a very low chance of not stunning enemy unless it's a ability reducer one.
So far on my tests, I fail to get this result. My specials become ineffective within a 20 hit band at least once, generally more than that.
When I add a 3* Black Widow into the team, she should add a separately calculated 20% chance. The problem is, I never see double stuns (one from Hulk, other from BW-Hulk synergy). I do see shorter stuns which would indicate BW-Hulk synergy taking effect. In short, if there's one stun active, the other seems tobe cancelled.
Can we get some explanation on this? Is Hawkeye-Quake synergy not applicable to stuns? Is BW-Hulk synergy getting cancelled when another stun is active?