Guess what I just found out
Y'all know how every time sabtk gets brought up someone mentions the Lancelot Galahad family tree thing that skyrocketed the dadow hc's popularity for a while until Sega had to say Shadow and Silver weren't related? Well APPARENTLY, while it's not canon in the main timeline, Black Knight kinda implies that it IS canon to their Lancelot and Galahad, to an extent- Just before the final fight, Merlina mentions the "rift between Lancelot and Gawain", which is a legitimate thing in Arthurian myth- but it only starts because Lancelot had an affair with Guinevere, and that information getting out caused a civil war that led him to kill Gawain's brothers to save Guinevere's life. Not only that but that very same affair is the reason Galahad exists, because Galahad's mother, Lady Elaine, only managed to get to Lance by using magic to take Guinevere's appearance and trick him. So in a weird roundabout way, Sonic and the Black Knight accidentally semi-confirms that their Lancelot and Galahad are related by confirming Lancelot's affair with Guinevere.
Additionally, in line with Black Knight's story, the previous king (I know he was an illusion but apparently he served as king long enough for everyone to be surprised about it) was corrupted by the power of immortality and drove 90% of people away from him because he was evil. So in this version, especially considering Lancelot's loyalty to the king despite the affair, is probably what led to it getting out AND the reason he was out in the middle of nowhere near the lake in the game. It's just that in this version it's likely everyone BUT Arthur that cares, and ultimately the whole issue is resolves a different way because of Lance and Gawain's loyalty to Arthur and the fact that everyone else is abandoning Arthur as king due to the corruption.
So yeah, Merlina offhandedly referencing Lancelot and Gawain fucking hating each other is a reference to legend that not only confirms Dadcelot, but also that the affair with Guinevere was a legitimate thing in Black Knight. I do wanna note that the entire civil war thing happening in the second paragraph originally happens after Galahad finds the Holy Grail, gets halfway home has a vision of the fucking rapture and subsequently uses the Grail to die, because him and Percival dying on that quest is part of what sets the stage for the fall of Camelot that starts with the affair reveal and civil war, but the game is already distanced enough from Arthurian lore that I'm not too fussed about that. If sabtk Galahad is anything like Silver he probably survived the rapture vision part just to get the fucking grail where it needed to be anyway.
