I don't think so, currently Napoli is in a downturn after Spalletti's departure and of course it will be quite difficult for the new coach to be able to continue what Spalletti has built, everything needs a process and the same goes for Francesco Calzona who is currently Napoli's coach In fact, the team's performance is starting to show better, but it also needs time to process building this team.
Spalletti got a biggest achievement in his coach career and he knows that he will not be able to repeat that success with Napoli. It is hard to defend Scudetto when Juventus, AC Milan, Inter Milan are ready challenge and take it over from Napoli. Napoli themselves will struggle to maintain their good performances and I believe Spalletti saw all of these challenging factors so he wisely decided to step down as Napoli coach.
Napoli's draw against Torino was quite unfortunate because the Napoli team, which was in top form in its last 2 matches, failed to take advantage of this moment to continue, but overall Napoli's performance was not too bad, which means that while coached by Francesco Calzona there was better progress.
This draw is harmful for Napoli's ambitious target, top four, and they are in a position like Bayern Munich in Bundesliga, with too big gaps less than competitors. Bayern Munich already went to quarter finals in Champions League and Napoli will have to focus on their match with Barcelona. With similar target like Bayern Munich, going to quarter finals in Champions League.