No team had previously overturned a two-goal first-leg deficit to reach the final of the second-tier play-offs – and Brighton made every attempt to create a bit of history.
Boosted by the availability of both Knockaert and Dunk after injury and suspension respectively, the Seagulls made a lightning start and could easily have been in front in the tie by the time Dunk netted from close range.
Knockaert struck the woodwork with a curling free-kick and also headed wide from five yards before crossing for Dunk to halve Brighton’s deficit.
Any momentum from that opening goal quickly disappeared, however, as Wallace’s cross beat everybody in the penalty area and nestled in David Stockdale’s far corner.
The goal was allowed to stand, despite protests by Dunk that he had been pushed by Gary Hooper as the ball was played into the box.
Wednesday, undoubtedly second best in the first period, were rarely threatened after half-time as Brighton fell to a third Championship play-off semi-final defeat in four seasons.
Owls flying into the Premier League?
Wednesday – who finished sixth in the Championship table, 15 points behind Brighton – are one win away from returning to the top flight for the first time in 16 years.
Since their relegation in 2000, the Owls have spent four years in League One and had only registered two top-half finishes in the second tier before this season.