IRCC and CBSA are separate federal agencies, and an ATIP request filed with either agency is delt separate by each agency by their respective ATIP division. Just because your IRCC notes are delayed, does not mean that your notes from CBSA will be delayed as well.
Also, in most cases, CBSA is very efficient and if they are unable to meet the 30 days statutory time frame, they will seek an extension of 30, 45, or 60 and in some rare cases 90 days. An extension notice to this effect will be sent to you.
See https://bit.ly/3qXsJK8
My AOR is July 6, 2021. My medicals is currently passed and Biometrics is complete as well (Both on Nov 4, 2021). Can I place order for notes from CBSA at this point ?