I think AsherO is right
What would happen if you are the last flight out of day and it's cancelled?
You might have to spend the night airside
That's what I thought too. On the other hand I think I read somewhere that they close the airside overnight, at least precovid.
I want to fly to Israel from the us with a stop over in Toronto Are they going to give me a hard time due to the fact that I’m not vaccinated nor have a card….?