If you miss your luggage you simply fill a form with the luggage tags in the lost luggage office.
Its the airports/ airlines' duty to send your luggage to your desired address at their courtesy.
Even you can claim compensation by filling a lost luggage form, USD 120 per day I guess.
If inbound flight from Dhaka is delayed, they usually escort you bypassing all the airport formalities
to get you to the Toronto bound flight, at the soonest. Sometimes It is inconvenient. But Turkish
airlines is the fastest to Toronto comparing to any other airline with that much short a transit time.
The best thing is, you finish all the traveling hustle in one go, before even you feel the anxiety.
This flight is popular among families without infants/ kids/ elderly.
Cheers mate.