What does luke and the horse Toby contribute to the play The Bear?

In Anton Chekhov's play "The Bear," Luke and the horse Toby serve primarily as comedic elements that enhance the absurdity of the situation. Luke, a servant, provides a contrasting perspective to the emotional turmoil of the main characters and adds a layer of humor through his interactions. Toby, the horse, symbolizes the mundane reality of life, grounding the play's more dramatic moments. Together, they contribute to the overall theme of the absurdity of human relationships and the unpredictability of love.