Dallas is 8 hours behind Doha
Best overlap: 4:00 PM to 6:00 PM in Doha is 8:00 AM to 10:00 AM in Dallas.
If you set up a recurring sync, 4:00 PM to 6:00 PM in Doha (8:00 AM to 10:00 AM in Dallas) is the natural home for it. Dallas is 8 hours behind Doha, so you only get about 2 hours of overlap a day — worth locking in a standing time like 4:00 PM in Doha (8:00 AM in Dallas) before it slips. Because Dallas and Doha don't both observe daylight saving, plan to re-check the overlap around March and November.