Sasuke had indeed learned Kakashi's Chidori, but the Chidori was an A-Rank technique and difficult to master. Even with Sasuke's talent, he still needed a moment to build it up before using it.
Crackle!
After the audience had waited in bafflement for quite some time, they finally saw a blinding lightning glow flash from Sasuke's left hand. It crackled and exploded, as though he were Raijin himself, holding thunder in his palm.
Then Sasuke burst into motion, turning into an afterimage as he shot straight down from the wall. The lightning in his left hand erupted wildly, its momentum terrifying!
Houka, seated on the main viewing platform, curled his lip disdainfully. Picking up someone else's scraps. Shameless.
But Orochimaru, disguised as the Fourth Kazekage and seated in front of Houka, widened his eyes. His heart surged with delight, and he wished he could rush down immediately, swallow Sasuke whole, and savor him for half a year!
"What was that move? So awesome!!"
In the contestants' area, Naruto stared wide-eyed at the dazzling lightning within the afterimage, his heart shaken.
"That's Chidori!"
Guy turned to glance at Kakashi. "I didn't expect you to be so reckless. You actually taught that move to Sasuke."
"Hey, hey, do you have any right to criticize me?" Kakashi could not take it anymore. "Didn't you also teach that reckless forbidden technique of yours to Rock Lee?"
Naruto, standing nearby, immediately grew a little flustered when he heard that.
So Kakashi-sensei taught Sasuke Chidori but not me...
Honestly, Naruto was a little jealous.
After all, it had not even been half a year since they had graduated. At his age, jealousy was only natural.
But when he thought of the Summoning Jutsu he had mastered, Naruto pulled himself together again!
As he pondered, Sasuke had already