I mailed my stuff off on 12/31.
Called on 1/12, since the check was not cashed and got someone on the phone who barely spoke English.
He said my check was being returned/there was a problem, etc.
The next day my check was cashed.
Around 2/12 I got the call about the interview.
Had my Interview on Thursday and should have my FFL by 3/1
Call on Monday but hang up if you get the fuzzy foreigner. He's a clueless fuck.