I'm more hopeful that Roma can stay in the top four until the end of this season, as that team also deserves to qualify for the Champions League after this season, allowing them to continue developing and facing different challenges in the coming season. Although, this season, Roma will clearly have to work harder for that position, as every team must be more consistent from the start of the season to the end to maintain their position and avoid being overtaken by other teams.
This means much depends on Roma's performance and how they can continue to improve with each match. If Roma misses the opportunity to maintain their winning streak, it will be difficult for them to maintain their top-four finish this season and qualify for the Champions League. The last two matches have still been a good start for Roma, as they have managed to pick up six points, albeit in a slightly more difficult manner, as their opponents have exerted significant pressure.
Beating Bologna in their first Serie A match gives us a bit more confidence in Roma this season, but they still have a lot of games to play. This doesn't mean anything, as they've only played two matches, and there are many more matches for which the Roma coach may need to prepare well.