I guess I am writing this 10th time. Did you search on this Jan AOR thread? One of the searches on this forum, would have showed you that, BG checks are started as soon as EE applicantion is submitted & gets over as soon as eligibility phase is over or along with the security stage.
You don’t have to worry too much about BG & security. It’s not in your control.
The BG & security are kind of connected phases but area of focus & the concerned teams involved are different. IRCC sometimes don’t even need biometrics Or RCMP results for the BG. They have all information from you application.But, It’s not true in all cases. The security is more checking your PCC & feedback from CBP to confirm admissibility. The security can take a week or even months. Every application is different & many things to cover for IRCC.
You may not always get accurate status from Web-forms & that will never match with online account status. Whenever you will get webform response showing these stages are marked as Valid/pass, you don’t have to worry too much. After PR approved, online account will show you when all these are complete.
Does this Settle your confusion?