I took the interview online from Ottawa, but im pretty sure i was Mississauga office.
The officer started by asking where i was taking the interview and asked for identifications (Drivers License and PR), she then asked to go over the passport stamps as i was asked to submit all passport pages before hand and translated. There was one entry that didn't have a corresponding stamp, and she stated that she contacted immigration and they dont have a record of me entering, however i had anticipated this stamp problem and prepared my boarding card to canada for this entry and at the same time i was a student in-class so i showed her my transcript as proof of me being in the country. She said she'll look into it more.
After the interview i reached out to border services and requested en entry record and it showed that i entered but they just didn't stamp my passport, so i submitted it to immigration, my interview was august 2023 and i did my oath May 2024, however my application was non-routine and im guessing it was for the passport stamps