The appointment of Meg O’Neill as BP's chief executive officer, replacing Murray Auchincloss, is a momentous milestone in the oil industry. When O’Neill takes over on April 1, 2026, she will become the first woman ever to lead a Big Oil company. But O’Neill’s arrival at BP could turn out to be even more momentous for the industry, as it could lead to the biggest merger deal in decades. Hours after BP announced that Auchincloss is stepping down effective immediately and O’Neill of Woodside Energy would become BP’s…