Eight unbeaten on the back of a comfortable win at local rivals Rotherham, a home cup-tie with Arsenal to follow – life is rosy in the Hillsborough garden.
Early second half goals from Lucas Joao and Fernando Forestieri put the Millers to the sword as Wednesday powered on in the Championship.
Tom Thorpe scored a consolation in stoppage time for the Millers but the damage was already done.
Earlier, a lacklustre opening period promptly gave way to a second half stunner as quickfire strikes from the visitors ultimately settled matters.
It was all change for the Owls following the draw at QPR in midweek - six new faces were recalled - and in typical derby fashion, a lively start ensued at the New York Stadium.
Glenn Loovens was on guard to nick the ball from the feet of Matt Derbyshire when the striker bore down on goal inside two minutes.
The contest then entered a lull in terms of chances, although the approach play from both sides was neat and tidy.
One Wednesday move on the half-hour spawned passes in double figures before Kieran Lee was a whisker away from connecting with a Forestieri feed.
Ten minutes before half time, Barry Bannan brushed the top of the net with a looping header – Lee thumped over the bar from 12 yards - and the interval came without real incident.
But just after the resumption, that situation changed – and then some.
First, on 46 minutes, Forestieri found room in the box and tested Lee Camp, who could only parry to the feet of Joao and the Portuguese side-footed home to give Wednesday the lead.
Then four minutes later, it was two. A Ross Wallace corner was deep to Daniel Pudil and the defender’s header back across goal fell to Forestieri for the hitman to double the advantage.
It might have been three on the hour when Joao timed his run to perfection but sliced over the bar and Bannan almost capped a superb performance with a maiden goal only to twice miss the target after bursting into the box.
Rotherham had little in response other than the occasional foray upfield which paid off right at the last when Thorpe finished a Chris Maguire free kick.
Owls: Westwood, Hunt, Loovens, Lees, Pudil, Wallace, Hutchinson, Lee, Bannan, Forestier, Joao (Nuhiu 75)