yes but rare. I received a TWE from each of the 5 SA but ended up with 2 appointments. There are a lot of emotions that come from the TWE experience and you question all of your life choices leading up to that moment. In the moment, none of it feels like it was worth it. However, you would never have come as far as you are today if you had not done all of the work to get this far. There may be a mini miracle and you get the call, but it could also play out with you pursuing Plan B that is the 4-year plan, or you could pursue the self-prep route and try again. You can apply until you age out - which for most is 4 or more cycles. The process is over when you want it to be.