Vancouver is 8 hours behind Geneva
Best overlap: 4:00 PM to 6:00 PM in Geneva is 8:00 AM to 10:00 AM in Vancouver.
Plan around 4:00 PM to 6:00 PM in Geneva, which is 8:00 AM to 10:00 AM in Vancouver, to catch everyone during office hours. Vancouver is 8 hours behind Geneva, so common hours are scarce (about 2 hours). Lock the slot, keep it short, and follow up in writing.