Bill Cosey and Celestial are central figures in Love, but neither are narrators. What is the effect of this?

Morrison uses first-person narration for L. and third person narration for Heed, Christine, and others. How does Morrison use tone, diction, and other narrative techniques to create differences in their narrative voices?

The chronology of Love is nonlinear, and the chapters frequently slide back and forth between the past and present as characters reminisce. What is the effect of this?