I know that Charlotte and her family spent their WWII exile in London and Canada. From what I understand, the official government in exile was in Montreal. The future Grand Duke Jean and several of his siblings continued their education at Laval University in Quebec City (along with their Austrian Imperial cousins), but Charlotte and Felix seemed to divide their time between London and Canada. What was the reason for this division of the family and the government? How much did time Charlotte and Felix spend in both London and Canada?