Tragedie, unless if course, as is seeing more likely every day, that LOT screws up the FIM. Sorry to sound like this, but how many times has something similar to this happened to you? And how many times have you flown the airlines involved? Personally I recently surprised 1000 TK flights over more than 30 years, and have had irrops and FIM's more times than I care to remember, including numerous EU carriers/countries to noon EU carriers and countries, involving Turkey and not involving Turkey. Telling this guy to go and chase both airlines is a waste of his time. Perhaps the FIM said HL not HK. Perhaps on the last sector they did not close the screen properly at the LOT end, all things that would make it a lot problem. I'm car you did not get what I wrote before, this is NOT baggage, which is cut and dry, which is the last carrier is responsible no matter what.

OP, I concur above, do not fixate on the ticket stick or the fact that TK printed it itself, State it once and then move on, as it is not as important as you think it is.

The whole point of them making the distinction is that one airline does not have as much freedom to mess with another airlines stock.