Maester Aemon is the show's first character to die on-screen from natural causes. The only other characters known to have died from natural causes are Hoster Tully, who only appeared on-screen as a corpse at his funeral in Walk of Punishment (2013), and Old Nan, the Stark servant who is considered deceased by the show's writing canon after the death of the Margaret John who played her, though her death was never mentioned on-screen. Peter Vaughan, who portrayed Maester Aemon, would pass away himself on December 6th, 2016, almost a year and a half after the airing of his final appearance on the show.
Tyrion is the only character in the entire series that has spoken to both Aemon and Daenerys, until season 7.
Tyene describes Bronn as having a very good voice. In the mid 1990s, Jerome Flynn had a singing career as one half of Robson and Jerome with fellow actor Robson Green. The pair had several UK chart number ones, most notably with a cover version of Unchained Melody which was number one for 7 weeks.
The title of this episode is a reference to Tyrion, who is "the gift" from Jorah to help him regain favor from Daenerys. It has several possible alternate meanings as almost every parallel storyline involves a character giving or receiving an important "gift" of some kind: Sam gifts Jon with dragonglass weapons for his journey to Hardhome, Melisandre informs Stannis that the Lord of Light will require a sacrifice to ensure their victory in Winterfell, and Littlefinger offers the "gift" of a witness to Olenna Tyrell to incriminate Cersei.
Actor Finn Jones (Loras) has stated in interviews that the Sparrows (Faith Militant) are not motivated by religious ideology, but are just power-hungry zealots who are frustrated by elitist rule. This seems to be corroborated by the previous episode Unbowed, Unbent, Unbroken (2015) where the Sparrows charged Loras for buggery, but they seem totally unconcerned with prosecuting Olyvar, even though he admitted to the same crime; and in this episode, Olenna also calls out to the High Sparrow for living in a city full of "murderers, thieves, and rapists", but only being concerned with the transgressions of the nobility.