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You have to fill up a form and request for CAN+ processing, which I did not fyi, so kindly refrain from making assumptions.
Please read the conditions and process of CAN+ and then react.
 
Well,i’m Not assuming.you yourself mentioned that you have valid Us visa.With Valid Us visa ,proper documents nd luck you got your approval.otherwise I haven’t came across someone with indian passport getting canada trv approval in 24 hours without their application being considered under CAN+.
You have come across someone now, ME!
LOL
 
"An applicant himself/herself cannot apply for his/her application to be processed under CAN+. The concerned visa office will decide so, subject to satisfying all the eligibility conditions. Thus, one must apply as normal."

Link: https://www.quora.com/What-is-the-CAN+-visa-for-Canada

"Considering your application for CAN+ expedited program is completely at the discretion of CIC and many other factors. Do not count on that. Instead, follow the timeline and apply for Canada visitor visa at least 3 months before your travel."

Link: https://www.visatraveler.com/visa-guides/canada-visa-requirements/

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Sorry, I'm a newbie.
 
"An applicant himself/herself cannot apply for his/her application to be processed under CAN+. The concerned visa office will decide so, subject to satisfying all the eligibility conditions. Thus, one must apply as normal."

Link: https://www.quora.com/What-is-the-CAN+-visa-for-Canada

"Considering your application for CAN+ expedited program is completely at the discretion of CIC and many other factors. Do not count on that. Instead, follow the timeline and apply for Canada visitor visa at least 3 months before your travel."

Link: https://www.visatraveler.com/visa-guides/canada-visa-requirements/

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Sorry, I'm a newbie.
You have to make a request in the covering letter if you wish to be considered under CAN+.
Discretion is with the Embassy....depending on the workload, applications are considered.
Timelines are seldom adhered to, as is evident from the Forums on this website.....otherwise we all would not be here.
 
How you came to know? Have you got any email?
dint receive an email, checked account and there it was updated (I check account 3 times daily :D)

Ideally I should have received the email as the earlier status said ""we will send a message once we start the review"
 
dint receive an email, checked account and there it was updated (I check account 3 times daily :D)

Ideally I should have received the email as the earlier status said ""we will send a message once we start the review"

As per my experience, we received the email one day after they posted the update on the website.