How does that work? They send them to D, and then those passenger pretend they have an international "connection" and head to E?
There's a corridor post D security that allows travelers to head to the E gates. It's a one way corridor though, so you can't go through E security to access D gates.
They have ways for people to get from different sections of the airport past security like for example at terminal 3 they have gates that are both for Us and domestic departures they just close off part of the area when they need to move people around.
You're thinking of Swing gates, T1 has like 20 of those, and those are a little different.
I was impressed by the overhead luggage capacity on Air Canada's 787s. I had a couple of full flights to/from Vancouver recently, most people had carry-on, and many of the overheads had excess space!
787s, 737 MAX's, and the 777's have been a godsend on Air Canada. So much luggage space, even on a full flight. I'll take a reduction in 1/4" of seat width if it means I'm guaranteed bin space for my carry on and personal item every time and therefore get room under the seat in front of me to stretch my legs.
The A320's and A321's, my god what a nightmare. Not once have I not been delayed at least an hour as a result of there not being enough bin space.
The C-Series I've honestly found to be a mixed bag. With some carry ons you can fit them on their side, other times you have to lay them flat. Honestly the options are not great there.
The A330s...flew on one for the first time 3 weeks ago, hands down the worst aircraft in the AC fleet. Horrible overhead bins (it's even difficult to fit regular carry ons in there), it was insanely noisy, and my god, no air vents. Also, for some reason, the mood lighting on those planes seems to fit more in line with a caramelldansen meme than with relaxing mood lighting. I lost an hour of sleep on that flight simply because of that. Next time I'll be taking a 787.