The landing visa is Valid till your medical is ( 1 year from the medical passed date ). So suppose your medical passed date was Dec 24 , 2001. The landing visa will be valid till Dec 24 , 2022.Most likely next day as per my experience.
I am an authorized representative on my Auntie and uncle application. I received information letter in IRCC account on April 12 regarding pre-arrival, then very next day there was passport request letter.
And once you submit passport. In few days, IRCC account says application approved under decision status.
They haven’t received their passports back yet but account states that application approved how long travel documents valid for.