Complex sentence: Wood's movements in the afternoon have not been reported prior to the late evening, when Wood claims he awoke on his couch having fallen asleep in front of the television and was immediately alarmed that Byrne was still not home.
Split into simpler sentences: Wood's movements in the afternoon have not been reported prior to the late evening when he awoke on his couch having fallen asleep in front of the television. He was immediately alarmed that Byrne was still not home.