On Wednesday im flying OSL - LHR - YUL. Im planning on bringing Helly Hansen 50L duffel bag (60x30x30) which is slightly bigger than what they’re advising. In Norway a lot of people are using those bags as hand luggages, because it’s quite popular here and I have used it as a hand luggage many times before with companies like KLM, Norwegian, Delta, AirFrance, Air Baltic and i didn’t have a single issue with it, it fits in overhead bin and staff didn’t say anything. On top of that im bringing a small backpack as a personal item. So I was just wandering how strict is BA?