Well they failed to utilize their chances and it caused them to draw the match Newcastle where definitely the underdogs in the match cause i can't remember the last time they featured in the tournament but they still managed to hold Milan to a draw which is enough for them to be happy about, not losing their first champions league game after so many years of inexperience.
If Acmilan had wom the game yesterday it would had put them in a better position on the table but they're currently in the 3rd position in the Group F though they still got same points with Newcastle who are currently in the second position, so far in their group PSG is the only team that secured three points this week's match day and they're the most likely to quality in the first position because i don't think any other team in their group would be very tough for them to beat
Pioli current strategy is easy to predict, if opposing coaches watch the replies from 5 matches against Inter Milan, they will understand how to break Pioli strategy. When the strategy starts to have difficulty scoring goals, Milan players will start implementing a triangle passing scheme. A draw with Newcastle could mean that AC Milan may not going to knockout phase. However, this season, Milan was lucky to get a UCL spot, because this position should have belonged to Juventus if not been subject to a points deduction.