Complex sentence: Celebrity chef Carla Hall made a cameo appearance staffing a food truck that Jesus used to cater its portrayal of the Last Supper, while the Preservation Hall Jazz Band also appeared for a performance of "When the Saints Go Marching In".
Split into simpler sentences: Celebrity chef Carla Hall made a cameo appearance staffing a food truck that Jesus used to cater its portrayal of the Last Supper. The Preservation Hall Jazz Band also appeared to contribute to a performance of "When the Saints Go Marching In".