This is a tough start for Ranieri to begin on Serie A. Even have many time when face Conte on all event, but Ranieri is look difficult to implement his strategy. He still look composition player which suitable for his scheme. I think if they used that formation on beginning, it will change again on the 2nd hals if it's not so effective to dampen Napoli attacker. Roma has only 19% chance to win on Napoli home which I think Ranieri will implement how to defend so effectively and relying to counter-attack.
This is not the first time for Conte, so he knows a lot about how to overcome Ranieri's strategy. so does Ranieri which I think this match will be tough with minimal goal difference or draw.
If Claudio Ranieri implements a defensive strategy and relies on counter-attacks, then all of this will indeed be quite suitable for facing Napoli, who have a pretty good attack this season and all of this can be expected to reduce any fast attacks that Napoli can make. And sometimes the counterattack strategy is quite effective in certain conditions. But the problem is that Conte must already know every strategy that Ranieri is likely to use. Because Conte definitely knows Ranieri very well when making strategies for the team he coaches. Because Conte also often faces clubs coached by Ranieri. So Ranieri must be able to create a new formula or strategy at AS Roma so that Conte cannot read the strategy used by AS Roma.