Manager Jose Mourinho said his Manchester United side "didn't lose" despite being beaten 2-1 by Hull in their EFL Cup semi-final second leg.
Having won the first leg 2-0, United joined Southampton in the final - to be played at Wembley on 26 February - with a 3-2 aggregate success.
But Mourinho refused to acknowledge Hull had scored a penalty during the second leg at the KCOM Stadium.
"I only saw two goals," said the Portuguese. "It was 1-1."
Hull went in front on the night through a penalty from Tom Huddlestone.
Replays showed two tussles in the area as the visitors defended a corner - Phil Jones tangling with Oumar Niasse, and Marcos Rojo briefly holding the shirt of Harry Maguire - and referee Jon Moss awarded the spot-kick.