I have experienced a long fly time, that day it was 1000x. I regretted for not having an entry point at that time.
The most hilarious part of this is that you'll always be found wanting to have launched into that slot -- you'll be sitting there, staring at your phone in disgust and jealousy for not hopping on in time.. TBH, that feeling leaves a deep cut, making the whole game look rigged to me. Why don't these bot fly as long as they want whenever I wager on them? Why does everything happen when I decide to not wager??...
I play crash but I only experience two digits for the longest time with my playing time. And just as you OP, I haven't seen such long fly as well with crash ever. Lucky are those that are able to ride for the longest fly ever and even not hitting the peak of it, going with the 100 would be already decent.
It's rare, but the truth is, if happens. If I wasn't able to capture this moment on my cell phone, maybe I wouldn't believe it myself. I don't even think other gamblers that have been used to the short-time fly would believe me either. Whatever I'm doing, I don't expect to hit this level all the time; I don't even wanna prepare my mind for it in the next 6 months.