Haven't purchased ticket yet.
Both flights are AirAsia (HAN>DMK, DMK>HAN).
Actually it's my girlfriend's problem She is Indonesian and was hassled by immigration at DMK last year so she wants to go to CNX where she has not been hassled. But it looks like all AirAsia HAN>CNX flights have a layover at DMK so she'll have to wait at airside. And I'm thinking she could just catch another AirAsia back to HAN from there - like she could get a HAN>DMK return ticket instead of HAN>CNX. But... maybe she has to go through check-in to get the return boarding pass?? Or would she get both boarding passes with the return ticket (all of this being done online).