To clarify the exact timeline and where the discrepancy lies, here is the full breakdown:
My Resume & Official Certificate: Both state 2 months (because the company calculated the entire internship period, combining both full-time and part-time work).
My Certn Input: I entered 1 month because I genuinely thought the background check form was strictly asking about the period where I was working full-time only.
The CEO's Confirmation: When Certn contacted the CEO, he confirmed 1 month to match exactly what I entered in the portal.
So the current situation is: My resume and uploaded certificate show 2 months, but my Certn entry and the CEO's verification show 1 month.
Given that I under-reported the duration on the verification form out of being conservative, does this change your assessment of how McKinsey HR will view the final report?