People are confused about Background checks vs Criminality and security checks...........
Please be noted that there is a huge difference between those two. PPl are writing personal mesgs about this
Before medicals request, CIC will do all necessary verification of docs related to ur work exp... including checking lead statement,making sure that the docs are genuine and any verification of employers or asking for second review by other officer..
If require they will call for interview BEFORE medicals.......
Basically delay between second line and MR is the time VO spends on Eligibility (second review, if required) Background check and/or interview
But when u see the second line, from that day VO started security and criminality checks.... these checks can be done by third party also....... this is check basically needed to be cleared before PPR