Complex sentence: During the alleged sexual incidents, Jackson wore underpants, and the accuser wore underpants or pajamas, and according to the accuser they were under the covers but according to his brother they were on top of the bed covers.
Split into simpler sentences: During the alleged sexual incidents, Jackson wore underpants, and the accuser wore underpants or pajamas, and according to the accuser they were under the covers. However, according to his brother they were on top of the bed covers.