1. A co-worker(...)several days.
Interpretation 1: The co-worker handles a convenience relationship with the manager, and probably is taking information about other partners opinions to inform this one.
Interpretation 2: The co-worker is a member of conflict resolution committee and is putting together the information in order to establish a dialogue which can make solution to the disagreements.
2. You´ve requested(...)to help.
Interpretation 1: The teacher has an conflict of interests with the student and simply does not like him and rejects intentionally to help him.
Interpretation 2: The teacher is busy with the exams and activities which has to check and evaluate; however she tried to establish extra class meetings in order to help to make lessons clearer.