So apparently if you start studying online without study permit approval that time also counts toward PGWP only for those starting in 2020 from what i understand.
Source:
https://www.cicnews.com/2020/08/online-study-done-before-study-permit-approval-counts-toward-pgwp-0815230.html#gs.cm9gm4
Source:
https://www.cicnews.com/2020/08/online-study-done-before-study-permit-approval-counts-toward-pgwp-0815230.html#gs.cm9gm4