Complex sentence: Andy later went to Spain to clear his head and went to visit Annie, Jack and Amos for a brief holiday, when he returned Diane asked about Jack's return but Andy said that his Grandmother was still too poorly and had asked Jack to stay longer.
Split into simpler sentences: Andy later went to Spain to clear his head and went to visit Annie, Jack and Amos for a brief holiday. When he returned, Diane asked about Jack's return but Andy said that his grandmother was still poorly and had asked Jack to stay longer.