Complex sentence: A crew working a CDO will generally operate the last flight out at night, have a significant time on the ground (anywhere from 0-8 hours) at the destination and then operate the first flight back to the hub in the morning.
Split into simpler sentences: A crew working a CDO will generally operate the last flight out at night. Have a significant time on the ground (anywhere from 0-8 hours) at the destination and then operate the first flight back to the hub in the morning.