Don't be hysterical! Two innate abilities is impossible
While Nero was having a conversation with Vanessa, the others on his new team also found numerous things to busy themselves with. With their departure to Perilith imminent, the final preparations were of the utmost importance.
That was the very reason why Noman, the 13-year-old kid who had been acting as the de facto leader of the group, was in his private room swinging a lightweight, practice spear around, making 'swish' and 'whoosh' sounds, alongside the equally important 'bang' and 'kapow' whenever he struck his imaginary enemies.
He was not recreating Nero's fight in his mind. No, the prodigy that he was, he was imagining an even more perilous fight where he fought off the entire team of Neophytes himself after they had been mind-controlled by an evil curse, with the only way to save them to defeat them in combat.