We had booked a Boston<->Mumbai itinerary with Expedia on Air France. Original flights were operated by Air France, KLM, Vistara & Delta. Obviously we can't go since the countries are in lock down and our Visas have been suspended.
Most legs have already been cancelled but Expedia still shows the full itinerary. Air France shows only bits and pieces: the whole itinerary it now consists of a one flight from Paris to Amsterdam and another one from Paris to New York. Neither flight touches our original departure or destination airport. However Air France still shows it as active. We have active cancellation notifications from KLM and Vistara for two of the legs. Air France and Delta have cancelled or re-booked silently.
Trying to call OTA or Air France at the moment is impossible.
Question: How can one determine when an itinerary/ticket has actually been cancelled. What evidence would be needed to initiate a charge back.