Upon disembarking at T2B, I would definitely go landside by choosing the least crowded of exits "Baggage 1" or "Baggage 2". This should not take you more than 10 minutes at most. Do no stop by the baggage carousels, exit the baggage hall but NOT the terminal, turn LEFT and walk all the way past the restaurant to a pair of escalators with a sign "Rental cars, T2 A, C, E". Go down, pass the rental cars counters and go back up on the other side (10 mnts at most). Go towards "A" (the other side is "C"). the CO desks are immediately beyond AA. Passport and security will not take more than 20 mnts and even if..., they do call passsengers on boarding flights into a special line. Normally, you should do the whole thing in less than 40 mnts. CO security may stop you in the jetway, but you will not miss your flight at that point.