This was about 3 years ago, but... I was called back within a week and given a date for about 4 weeks later.
I then bombed the simulator and/or the interview, so make sure
1/. you are current and proficient with your IF scan; and
2/. you know your stuff about the QF fleet - types, numbers, engines etc.
To those that know:
What is the correct response when they find that hole in your knowledge?
"Gee that's a hole in my preparation, I'll never make that mistake again?"