Swissport TA in IAD told me I had to move my own bags through YYZ.
A few hour later, though the concierge had assured me the flight was being held, as did the inbound IC landing in YOW, the YOW GA made a point of scarring the bejesus out of 25 PAX, running the whole terminal to make their YHZ cx, that final boarding had started. Zero f's given, I was halfway down the air bridge as she was beligerantly explaining how it was critical she made that announcement to all but crying FOTSGs.
Writing that out I'm actually kinda pissed. Lazy and indifferent I get, but she was clearly enjoying the sadism.