I found a couple of RHP games with this ending (KQN v KQ) that needlessly ended in a draw.
Antoine - Andy Spry RHP 2015
White did not play 76 Qd6 forcing off the Queens and the g-pawn promotes
Instead they played 76. Kh4 and Black picked up the Knight with 76...Qh7+
BrianDonald - brunob61 RHP 2018
White did not play 68 Qxc1++ Yes after 68...Kxc1 69.Nb3+ and 70.Nxa5
the Black King can catch the a-pawn drawing, but White never look at...
Antoine - Andy Spry RHP 2015
White did not play 76 Qd6 forcing off the Queens and the g-pawn promotes
Instead they played 76. Kh4 and Black picked up the Knight with 76...Qh7+
BrianDonald - brunob61 RHP 2018
White did not play 68 Qxc1++ Yes after 68...Kxc1 69.Nb3+ and 70.Nxa5
the Black King can catch the a-pawn drawing, but White never look at...
@greenpawn34 saidSo many players spend all their time learning openings and searching for traps and tricky gambits. They'd be better off gaining an instinct for the end game. At my club, I've seen more than one game drawn unnecessarily because one player didn't realise how to create a passer, and the other just lucked into it; and also lost, because the defender had no idea how to stop a pawn.
White did not play 76 Qd6 forcing off the Queens and the g-pawn promotes
Instead they played 76. Kh4 and Black picked up the Knight with 76...Qh7+