Oh yea! I see it!
G5xf6 Kh6 Rxh8 Bxh8 F7 Bg7 Bc6 Kg8 Be8
And from there, the black pawn is deadlocked and the black king or black bishop is also locked to the promoting pawn, so it’s just a series of white pawn and king moves to finally get the promotion.
Mate in 38!
Thank you, I too fell in love with this puzzle.