Is the Italian, who has taken the seat vacated by seven-times world champion Lewis Hamilton, an Andrea or a Kimi? Or both? Antonelli is relaxed about it. For Wolff, it is a matter of performance.
"Kimi, you're not an Andrea today," the Austrian declared over the team radio as Antonelli took pole position for the Miami Grand Prix sprint last Friday, becoming the youngest-ever F1 driver on a pole of any sort.
Kimi, a name familiar to any F1 fan from Ferrari's 2007 world champion Kimi Raikkonen, sounds racy and has become quickly adopted by commentators, while Andrea is the one Wolff uses - as a joke between them according to team insiders - when things could have gone better.
In Miami last time out, it was a weekend of both Kimi and Andrea.
After qualifying on pole for the sprint, Antonelli finished 10th - but moved back to seventh after penalties for some of those ahead.
He and Red Bull's Max Verstappen collided in the pitlane due to an unsafe release by Red Bull for which the four-time world champion was penalised. Antonelli drew plaudits for the way he handled the incident, averting something worse by continuing down the pitlane rather than taking his planned stop.
He qualified third for Sunday's race, with teammate George Russell fifth, but ended up sixth with Russell third.
Wolff told reporters, referring to Kimi throughout, that Antonelli's single lap speed was a high point.
"That's another proof of his talent and a good indication of how the future can be," he added, recognising that the Italian lacked experience in managing the tyres and finding the right references.
"(Race engineer Peter) Bono (Bonnington) really tried to guide him but when you're in that car, it's not easy. And I think it's just part of the learning curve, it's nothing that is disappointing or not.
"Overall, I go away with the feeling that he's done a good job."
Antonelli has scored in five of his six races, becoming also the youngest driver ever to lead a Formula 1 race and set the fastest lap when he did so in Japan.
He is sixth in the standings with 48 points, seven more than Ferrari's Hamilton and more than four times as many as the combined tally of the other five rookies.