It seems now to be possible to redeem miles against TGV voucher to be used with SNCF.
https://corporate.airfrance.com/en/p...-and-introduce
Ratio is terrible but anyway... Other issues compared to a full booking through Train+Air when you want to combine are:
- that trains usually go for sale about 2-3 months out compared to 360days for air travel (not sure to get the train you want when booking your flights in advance ?)
- What happens in case of irrops on the train if you buy both tickets seperately.
Available from the flying blue store: