I'm booking a flight one-way from Ashgabat to Dublin via Istanbul. If I book the two legs separately, both with Turkish Airlines, it'a about €120 cheaper than booking it as a single (again with Turkish Airlines, no idea why). Does anyone have an idea if they will still check my baggage through to Dublin, or will I have to collect and re-check in (I have time, but don't want the hassle, as well as the fact I'll probably have to get a visa stamp "on arrival").

Thanks, Stephen