Maybe teamwork is a better way of training your team than balanced. I understand that my new players need to get to know each other before they start performing.
It is a nice winning streak, and I wanted to share it.
Once the team has fully gelled, Team Cohesion doesn't really do a lot. If you've added new players, or even promoted from your reserve squad, then its very helpful, but only for a time. Once your AssMan feedback is that the team has a good understanding, it doesn't do much.