The natures did not commingle, merge, infuse each other, or replace each other. Gwyneth talks to the darkling and agrees to commingle with it. The rhythms of the void commingle in the plumed bells. Towards the end of the summer, for the reproductive season, the sexes necessarily commingle. The two lines do not commingle until the Arisian breeding plan brings them together. They commingle to bring it to life.