That could very well be, but there is nothing about Turkish in the policy wording that was cited to me, nor was that mentioned in any conversation as a problem. Certainly no out of alliance option was suggested as an alternative to offer rerouting, it was refund, wait for the next LH flight, or nothing.Im sorry, Turkish are known for not accepting rebooking from other airlines. Happened me during the SAS-strike in april 2019 when I tried to get home from Hongkong.