Complex sentence: The Amos's went to their suite at 4:30 a.m. At 8:30 a.m., Lowell called Bert Crabtree, another executive from the party, and seemed to be in a panic.
Split into simpler sentences: The Amos's went to their suite at 4:30 am. Four hours later (at 8:30 am) Lowell called Bert Crabtree, another executive from the party, and seemed to be in a panic.