I booked the travel on AC metal.

All three planes carried the Tango livery but were Canadian planes with both F and Y seating (very strange given I thought Tango was on class) Perhaps these planes were advertising Tango. Since we were going through the planes so fast I'm sure they were spare planes that were underutilized at YYZ (They were able to get a new plane up to the gate within 15minutes of departing the last plane).

As for the meals, AC125 for YYC was boarding at gate next gate as our departing 15minites later (the last attempt at 3:00pm). The gate agent announced for the benefit on those flying 3117 a hot meal would be served. This either indicated that on the earlier flights no meal was planned or I took it to mean that we would get a meal where as those on 125 would not.