Would a French withdrawal expand Operation Dynamo?

Could an organized French naval withdrawal evacuate more French troops and air personnel?

Probably; it would likely merge with the Dynamo evacuation and carry more fighting personnel out of France.

An organized fleet withdrawal would likely merge with the wider Operation Dynamo evacuation. Naval lift could carry more French soldiers, air personnel, technicians, and other trained people beyond those removed historically. Those evacuees would provide the human base for continued French military operations rather than leaving only ships without supporting institutions. The answer is deliberately probable rather than certain because the number rescued would still depend on timing and the condition of the ports.