Originally Posted by Sifaan

For segments actually operated by QR the calculation will be the same if you take the end to end or via DOH (e.g. YUL-BOM = YUL-DOH + DOH-BOM); and that's what you will earn on your trip - for YUL-YYZ you will not earn on either AC or Westjet

YYZ-BOM showing a result on the QCalculator might be because QR offers a codeshare with somebody on that route (e.g. BA via London)