Complex sentence: It took 2 days to shoot the video due to both Andrea and Sharon collapsed in the mid-day sun whilst shooting both were treated in hospital for heat exhaustion and were back on the set within 24 hours.
Split into simpler sentences: It took 2 days to shoot the video due to both Andrea and Sharon collapsing in the mid-day sun whilst shooting. Both were treated in hospital for heat exhaustion and were back on the set within 24 hours.