Keep updating your app every week. No joke.
Hypothetical but close to reality(IMO): There are 1000 highly qualified applicants to choose from out of say, 8000. They all have about the same qualifications, etc. They plan on hiring 70 a month, and say interviewing 200/mo. You can see it will take at least 5 months to get through the 1000 highly qualified guys.
What I’m getting at...it’s a numbers game. All you can do is be ready when they call. Chances are, they will.