If Roma win the Europa League, then they will get a ticket and there will be 5 Italian teams in the Champions League. Have you forgotten about it? It will be a repeat of what happened to the German teams this year - 5 teams received direct tickets to the Champions League group stage. By the way, I wonder if Roma goes to the Champions League, will Italy retain 2 tickets to the Europa League? I do not know this nuance.
I also don't understand this yet, but in my opinion, tickets for clubs in the league will be adjusted, there is a possibility that they will be given to one team under AS Roma in final standing. Since going to UCL is a prize for winning UEL, then the ticket that should belong to them based on the league standings will automatically shift to the lower team because if it is not given to the team below AS Roma in standing, won't the participating team minus 1 club?
I already trying to find the rule about this, but still not find clear information yet.