Yes I believe it is same letter.
(As per letter I received for my Auntie and Uncle application)On the top it says primary office Mississauga and bottom header states
Immigration Section - Service de l’Immigration
7/8 Shantipath, Chanakyapuri PO Box 5209 New Delhi 110021 India
www.india.gc.ca
One the third page of letter it has instructions to follow if the person is in Canada.
As per letter- B) If you are currently in Canada, you are not required to submit your passport and will be landed virtually. Please advise our office via webform within 5 days of receipt of this letter if you and/or any of your dependents are in Canada. Please include each person’s name/UCI and where they are currently staying/residing (in Canada or overseas)
I just double checked the letter and I did not see any instructions stating if the applicant is in Canada, the passport needs to be submitted to "Case Processing Centre – Ottawa".