Max Untargetable Duration is Less than 5 Seconds
Sorry, the other thread got too long but it's simple:
You CANNOT troll-pole while in zhonyas or bards ult or tahms belly. So the program must acknowledge that you are not in "statis" for the pole to proc at all. This goes for every combo in your thread. There must be even a millisecond where fizz is not untargetable for each move to be executed. So it's not a long duration, it's just a series of very close moves that make him untargetable.
Sorry to be the bubble burster dude.