Chance for AC Milan to catch Inter Milan in Serie A is small like chance for Bayern Munich to catch Leverkusen in Bundesliga. They both have almost no chance to catch the first teams in their leagues and can focus on their second position protection as only main task till their league ending.
If you look at the remaining matches for this season, AC Milan's chance of catching Inter Milan's points is no longer possible, because both points are quite far away now. AC Milan only needs to maintain second place in the standings and next season they can play much better to win the title. Now AC Milan's task is only to play more consistently so that by the end of the season they can be in second place in the standings.
Juventus situation is like AC Milan with pressure from Bologna to defend their third position but it is almost impossible for Juventus to lose a position in top four to AS Roma. They have 7 points more than AS Roma after 31 matches so far and only need to play carefully to defend their position against Roma.
This pressure must be taken seriously by Juventus because if they fail to maintain the match and Juventus loses victory in the next few matches, it will make them lose third place in the standings. Moreover, they drew against Torino and this is an advantage for Bologna because now their points are getting closer.