Obviously this shouldn't be allowed, as 1 you're gonna get jumped on by 3 cents because they never play alone, or as just one cent.
And 2 if getting knocked down in revenge was a thing... Why can't Tiandi shove or kick someone in revenge? Seen my kick connect multiple times and and whoever in revenge just eats it. On top of the knock down effect the problem is that it actually interrupts. As in I'm going for a heavy because they threw a move and in revenge and *boop* now I'm blinded, my heavy was cancelled and a cent is mid combo.
Cent's punch behavior was changed on TG to behave like normal bashes vs revenge. I.E the cc effect only comes into play if the person in revenge isn't in the middle of some animation. Note that recovery frames are not absent when you're in revenge. Which is why you can be GBed even after throwing an attack if said attack has very noticable recovery. (ex raider's chained zone.)
I have been saying this for ages that revenge has to be looked at with fresh eyes. It is broken. Some heroes gets revenge literally instantly and back to back over and over. While some others don't even see it. When popping is another problem. Some pops revenge and can knock me down after good 3 seconds. I pop revenge just before nothing. Or popping revenge against Cent knocks you down jumps on you with everyone else if you dont lose all your revenge health you also lose hope 80% percent of your revenge duration so pointless. Also you get revenge but cant pop it because you are constantly staggered by attacks. Or you get some people keep their revenge for good 5-10 min. Revenge is very broken and unbalanced and needs to be looked at properly.