Dallas is 2 hours ahead of Portland
Best overlap: 8:00 AM to 4:00 PM in Portland is 10:00 AM to 6:00 PM in Dallas.
Aim for 8:00 AM to 4:00 PM Portland time — that's 10:00 AM to 6:00 PM over in Dallas. Dallas is 2 hours ahead of Portland, but you still share a generous 8 hours of overlap, so scheduling is easy and there's room to move a meeting when you need to.