Hello I have booked tickets from Kolkata to Toronto via Dubai with two different pnrs ( I have applied for Dubai…

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Hello I have booked tickets from Kolkata to Toronto via Dubai with two different pnrs ( I have applied for Dubai transit visa ). Now I am planning to go to Calgary as my final destination but I have two queries. Anybody with experience plz put their suggestions. 1. Do I have to complete my immigration process in Toronto and then take next flight to Calgary? Or can I do it in Calgary?I don’t have any connecting flights so yes I have to collect luggage and maybe cross immigration section.( I don’t have much idea) 2. When I am trying to book flight from Toronto to Calgary only one check in and cabin luggage is being allowed. What to do?