Back when Fin's son first told him to expect a grandson in Intersecting Lives (2016), Fin exclaimed that his grandson will call him "Fin". He was adamant that he did not want to be called "grandpa' or anything like it. This episode marks the first appearance of the child, and Fin adorably refers to himself as "Pop-Pop", a variation of grandpa.
The title of this episode is that of a very famous song by the late, great Stephen Sondheim, from the musical "A Little Night Music."
Benson, being familiar with the relationship James and Haley had, references similar cases such as in the episodes Taboo (2006) and Father Dearest (2012).