There are no direct flight to Dhaka on June 8, but a number of 1 stop flights with Emirates, Gulfair, Qatar, Oman and JetAirways
The flight takes a minimum of 7 to 8 hrs.
the guy just got back to me again, he talked to chad & stephanie at roughly 5.30 pm Oman time on June 8. C & S ended up taking the JetAir flight via Mumbai, the other girl-girl team took the qatar airways flight via doha.
JetAir via Mumbai seems to be
9W 539 Dep 12:35 (jun9) Arr 04:35am (jun9) 2hr30 flight time and
9W 276 Dep 9:30am (jun9) Arr 1:30pm (jun9) 3 hr3 flight time (arrive 63 min late)
Qatar via Doha
QR 169 Dep 11:36pm (jun8) Arr 11:48pm (jun8) 1hr12 flight time
earlier Qatar flight on jun8 is at 10am which doesn't fit and I can only find a 9pm departure the next day from Doha onwards...
QR 344 Dep 9:16pm (jun9) Arr 5:19am (jun10) 5hr04 flight time
so the F/F flight looks like a bad mistake, or wrong information at the moment.
Will keep looking for other flights that would fit for them.