The planning phase is very crucial and dictates the direction into which the team will take to accomplish the project goals. Overlapping tasks and projects is a common thing that sometimes inescapable. Communication between teams and project leads is essential to meeting deadlines and not leaving any lingering action items. Planning for a project will usually need to be changed because of priority actions, date changes, unpredictable/unanticipated events. Instead of planning around these events, have a plan in place when these unanticipated events happen.