0731 GMT February 25, 2020
Yule was in second place after the first leg and went on to produce a consistent second leg to ensure a combined winning total of 1min 41.50sec down the Ganslern course in partly cloudy, relatively warm conditions, AFP reported.
Austrian Marco Schwarz, a two-time bronze medalist (slalom, combined) at last year's world championships in Are, Sweden, finished second at 0.12sec, with defending champion Noel, who was seeking to emulate his Wengen-Kitzbuehel double from last season after victory at the Swiss resort last weekend, in third, at 0.37sec.
Unheralded Norwegian teenager Lucas Braathen, with a lowly start number of 34, had laid down the run of his life to lead the first leg.
Going into the second run, the 19-year-old Braathen, whose sixth place finish in the season opener in Soelden was to date his first top-10 finish on the circuit, had a lead of 0.33sec.
But he couldn't hold it to the line, eventually finishing fourth equal with teammate Henrik Kristoffersen, a two-time winner on the Ganslern in 2016 and 2018.
"I can't believe it, I have no words," Braathen gasped.
"I missed out on a podium, but I'm so happy."
Instead it was Yule, the 26-year-old born in Switzerland to Scottish parents, who took his World Cup slalom win tally to four with a first Swiss win in the Tyrolean resort since Dumeng Giovanoli in 1968.
The big loser of the day was France's Val d'Isere slalom victor Alexis Pinturault, who straddled a gate on the second run.
Pinturault now sits fourth in the race for the overall World Cup title, on 642 points.
Kristoffersen shot up into the lead on 741pts thanks to his fourth-place finish, sitting ahead of compatriot Aleksander Aamodt Kilde (700) and Austrian Matthias Mayer (692), the latter boosted after winning Saturday's downhill and finishing joint second with Kilde in Friday's super-G.