I didn't say that Atalanta has qualified for next season's UEFA Champions League; what I said was that the win Atalanta had against Lecce has given them hope of qualifying for next season's UEFA Champions League because Juventus is leading them by one point and there are two remaining matches for the Serie A season to end.
Even if you had mentioned that Atalanta has qualified for the champions League next season you are still right because with the improvement Atalanta has on this season has already landed them into champions league next season and also one good thing about their current position now is that they don't have much competitors against them because they have 6 points above their below teams especially Roma and there is no way Roma will come close to them in terms of there points considering the fact that they have just few matches to the end of the season.
So perhaps even if Juventus has one point above Atalanta it shouldn't be a big deal because what matters is the ability of qualifying to the champions League league next season and already Atalanta has been able to achieve that, so perhaps what they should be looking at now is how to improve there performance next season in other to go far on the champions League.