Originally Posted by
ISTFlyer
If no shorter possible option is available, TK would rebook you to an hotel for your entire duration of your stay; however, if there is a MLE-IST flight the next day that would connect to your currently booked IST-PRG flight on the same exact date you're currently booked, TK might refuse to provide you a hotel stating that there is a shorter connection.
I ended up rebooking as following:
MLE IST - IST VIE - VIE PRG(Austrian) for free of charge
thank you for your help!