I suppose as today’s pic features both Sarah and Georg, it’s not really a “monopolylogue” (‘A dramatic entertainment in which a single performer takes the part of all the characters involved. Also in extended use’, OED), but rather a duopolylogue. Whatever it is known as technically, S&G are very good at it.
Day #264 of a 365 project, where the daily pic is informed by the OED word of the day.