It’s really a big mystery. I submitted an app late Oct 2019, forgot about it and got the call in late Jan 2020 and was told to update my app to the 2020 version, interviewed early March, pool letter late March. I had no internal recs, but I was able to check yes to all the international flight experience questions. Background at time of application: No 121 time, KC-135 Evaluator; 3,600 total; 3,200 heavy multi-engine turbine time; 2,200 Heavy Jet PIC. My advice is keep grinding