Mid-air collision planned?

[chizzer]

From Ottawa Airport's website:
JZA8857
 Jazz 21:30 21:30
20A
On Time
Toronto

From Pearson Airport's website:
Flight: AC8857
Arriving From: Ottawa
Airline: Air Canada Jazz
Phone Number: 1-800-247-2262

Scheduled Time: Mar 8, 22:35
Revised Time: Mar 8, 22:35
Status: Cancelled

So, which is it?