In article .com,
wrote:

Plus it was a 0600 flight, which meant awakening at around 0430.
With a muggy motel room listening to countless AC units hum, I
wonder what their sleep situation was ??

Probably earlier. With a 45-minute "show" time", 15-minute shuttle ride,
arise/shower/shave/dress/pack/eat (30-minutes?) puts it closer to 4:00
AM.

Couple that with "what time did they get to sleep"?/"how much did they
get"? and the quality of sleep.
Check cell phone records.