There wasn't any close miss. The "close miss" was a press blast operation by a competitor. The two companies were in coordination and because the competitor couldn't trust SpaceX to avoid their satellite spacex disabled their avoidance intentionally so that the competitor could move their satellite. Then said competitor went on a crazy press tirade about "dangerous starlink" even though SpaceX helped them out. If SpaceX had done nothing Starlink would have successfully avoided the competitor's satellite.