What is the probability of TWO 6 point Fire Bets at the same table in 1 hour?
Can't answer that, but at Hollywood Cbus a year ago, I witnessed a woman throw two 5 pointers within an hour...
Last time I went down to Connecticut (6 hour drive for me) I was at the craps table at Mohegan Sun and ended up shooting all 6 points. Sadly I didn't bet the fire bet and the lady who had been betting it the whole time I was there had run off to the restroom just as I started my roll, she was some mad I tell you what. She ended up calling everyone she knew to tell then how she just missed out on 5k. I ended up ahead by a bit and 7-out on my next point. First and only time I've seen the fire bet win.
More likely had she been there you would not have shot all 6 points. Unless you would have shot the dice the exact same way and they landed the exact same way (not hitting her chips). I liken this to the RNG on slot and video poker machines, everything in your environment alters the outcome, no matter how miniscule the difference.
Of course thinking of it this way you either accept it and remain calm or don't and let it make you an "angry gambler". I prefer the former.