No, it is confusing, he is going to Fiji, two separate tickets, one on American purchased separately from Fiji
Air ticket. SO they are not connected. He is in SLC, Fiji check in closes in 40 min, so he wont make it to LAX in time to check in there.
Online Check In for Fiji doesn’t work, gives error and says contact Fiji, he contacted them and they can’t check him in over the phone