Lots of overlapped boats “barge” at the stbd end of a Start line on Stbd tack, the mark is a buoy surrounded by navigable water.
Minor contact occurs between a number of boats with no damage or injury.
The leeward boat sails his Proper Course, but The boat above cannot keep clear because of the boat to windward of him and the boat above and the boat above ….
What happens if 2 boats in the middle of this “sandwich” protest each other?
How do the Rules sort this out?