...and then, having successfully maintained concentration through that - Keltham has been practicing! - he'll take this chance to show everyone dath ilan properly, with high-definition video, and sound.
There are sights shown in Cheliax then that would have not been seen in Golarion since the fall of Azlant, and perhaps also not seen before. Vast abysses greater than the Pits of Gormuz, not where Civilization's greater weapons were tested, but as mines where minerals were torn entirely from the ground. It seems more real now, what Keltham sometimes told them, that in Civilization they could produce a million tons of spellsilver if they had a reason. People floating above huge grates from which air blasts upward, soaring through the air on strange artificial wings, in a world where the Flight spell doesn't exist.
There is music heard then, ranging from the strangely ethereal and beautiful, to sounds that the Chelish can hardly recognize as music at all.
And Keltham shows them one of the few music videos that he's seen often enough to remember by frame: a children's song about dath ilan's logistics, that he and his parents used to sing around the dinner table on more festive dinner nights, with vidscreen accompaniment, when he was little.