Another thought,
Self used to be an employee of federal government temporarily and that time, my boss requested me to obtain CSIS security clearance.
That time I only filled a form telling my past history and you know what, after one week only, I got my security clearance.
So I am thinking is it possible that they don't even initiate my SS since I already have security clearance in the past? But how to explain CBSA part? ( Someone in the forum said they will exempt a number of people from SS?)
Related info:
https://www.csis-scrs.gc.ca/scrtscrnng/index-en.php
What I had is Government Security Screening
What IRCC needs is Immigration and Citizenship Screening
Thinking if these two types of SS can be exchangeable