Canadian Airlines Plus - AC/CP Flight Duplication replaced with... CP/CP duplication?

Just taking a look at the schedules for YVR-YYC on the Canadian website.

For April 3,
CP 670 is at 12:30 on a 737,
CP 674 is at 14:00 on a 737, and
CP 678 is at 14:15 on a 737.

For May 3, and
CP 670 is now at 14:15 on a 737
CP 674 is still at 14:00 on a 737
CP 678 is still at 14:15 on a 737.

So both 670 and 678 leave at the same time?!?

(670 apparantely arrives 5 minutes sooner)