Dhaka is 11 hours ahead of Dallas
There is no standard 8-to-6 overlap. Someone joins early or late.
Dhaka is 11 hours ahead of Dallas, so their typical working days don't line up at all. Plan on one side joining outside normal hours. A recurring slot that trades off between early mornings and late evenings usually works best. Watch the DST gap — when Dallas changes its clocks and Dhaka stays the same, this window slides by an hour.