I don't think even AC Milan will catch Inter Milan in the table right now. Inter Milan are at the top of the table, where they have recorded 75 points, while AC Milan are in the second position with 59 points, so you can see that there is a big difference, and this shows that Inter Milan are going to keep their consistency till the final stage of the season. However, I think AC Milan should put in more effort in their matches because if they lose any match now while Juventus get a single win, they will take over their position in the table. Although Juventus performance is a little falling, they may get the second position if they do well; if not, I think the first position is not for them.
Yup, AC Milan may not be able to reach the points obtained by Inter Milan. It's not about 16 points mathematically. With this point difference, it takes 6 matches with consecutive wins to be achieved by AC Milan, and 6 consecutive defeats must be experienced by Inter Milan. This seems impossible if we look at Inter Milan performance so far. The derby will determine whether Inter will become more comfortable with point difference with AC Milan, or will be a bit of shock therapy for Inter Milan, after always winning the Derby Della Madonnina since last season, with a defeat. However, I can't speculate on this, as I think Inter will probably win the Derby again.