Ultimately he was dismissed from the American army, less it appears for his conduct at Monmouth than for his impudent demeanor toward Congress afterwards.
These events on land were quickly followed by stirring events on the sea.

The delays of the British Admiralty of this time seem almost incredible.

Two hundred ships waited at Spithead for three months for convoy to the West Indies, while all the time the people of the West Indies, cut off from their usual sources of supply in America, were in distress for food.

Seven weeks passed after d'Estaing had sailed for America, before the Admiralty knew that he was really gone and sent Admiral Byron, with fourteen ships, to the aid of Lord Howe.

When d'Estaing was already before New York Byron was still battling with storms in mid-Atlantic, storms so severe that his fleet was entirely dispersed and his flagship was alone when it reached Long Island on the 18th of August.
Meanwhile the French had a great chance.