Sure. It's important to first remind Canadians that the first version of the bill came into force a few months before the pandemic. Then the pandemic hit, and we realized that the airlines were not obligated to refund passengers for cancellations outside of the airlines' control, so we made changes to require airlines to refund passengers if a flight was cancelled, even for reasons outside the control of the airline. Those included even bad weather or a pandemic.
On January 12th, 2023. See this statement in context.