That’s wild! I’m not very good but if black offered me a draw in this position my thought would be “his pawn is faster, so why would he offer a draw? Unless he

That’s wild! I’m not very good but if black offered me a draw in this position my thought would be “his pawn is faster, so why would he offer a draw? Unless he thinks he’s losing for some reason…” which would be the hint to look for the tactic. I guess in many queen/king endgames you can have perpetual checks, but accepting the draw wouldn’t be my first instinct.