AT Kearney Middle East phone CV screening - Conducted with every applicant?

Hi,

I applied to AT Kearney Middle East a couple of days ago, and received an e-mail for a CV screening request via a 10 minute phone call.

Just out of interest, is there a filtering process for who is called for CV screening and who not, or is it conducted with nearly all applicants for AT Kearney Middle East? I know knowing this does not change the situation, but it would be good to know whether I should keep realistic hopes for a first-round interview invitation after receiving a CV screening request.