Earlier this week I got caught out by the SNCF strikes when my train was cancelled, and ended up with an unexpected night in Paris. I've had a chat with my (expensive but fairly generous) travel insurance provider, and they've said it's likely that they'll cover the extra costs incurred, less anything I get from SNCF.
As per this question on the Garantie Ponctualité and cancellations, I know that cancellations mean that the Garantie Ponctualité doesn't automatically apply, but that it's possible that they'll offer something anyway. So, I've fought with the online claim form, including having much fun with the form insisting on receiving a French phone number to submit no matter what country you say you're from (luckily it finally took all zeros!), and I've submitted a claim to SNCF.
Ideally I'd like to submit the travel insurance claim soon, while the details are all still fresh in my mind, but the insurance company have said I can't do that until I know how much, if any, SNCF will contribute. So, that leaves me to wonder - what is the typical response time for SNCF to claims through their Réclamation en ligne system?