Ottawa is 2 hours ahead of Vancouver
Best overlap: 8:00 AM to 4:00 PM in Vancouver is 10:00 AM to 6:00 PM in Ottawa.
Book within 8:00 AM to 4:00 PM Vancouver time (10:00 AM to 6:00 PM in Ottawa) and both teams will be at work. That's a roomy 8 hours of common time each day, so finding a slot that suits everyone is rarely a problem.