Complex sentence: Sometimes night services between Manchester Airport and York operate via Manchester Victoria, but do not call and continue via Ashton-under-Lyne to rejoin the usual route at Stalybridge, or continue through Rochdale and Hebden Bridge before reaching Huddersfield.
Split into simpler sentences: Sometimes night services for example between Manchester Airport and York operate via Manchester Victoria, but do not call there. They then run via Ashton-under-Lyne to rejoin the usual route at Stalybridge, or continue through Rochdale and Hebden Bridge before reaching Huddersfield.