where the hell did you got that info???
6 month for an interview??? 6 month for the contract???
Man, even if that happened to you don't assume is like that for everyone...
For me was 3 months for the interview, 3 WEEKS for the good news, 4 WEEKS for the employment offer, 4 WEEKS for DOJ. From interview to join 6,5 months!!
And others were even faster, so don't share information as if its the only way things go at QR because it isn't!!