Complex sentence: The route included the Rue de Rivoli and the Champs-Élysées, and the processions went from the Arc de Triomphe to Notre Dame, and then from Notre Dame to Les Invalides.
Split into simpler sentences: The route included the Rue de Rivoli and the Champs-Élysées. The processions went from the Arc de Triomphe to Notre Dame and then from Notre Dame to Les Invalides.