I have route KRKFRA(LH,1h5m connection)-FRAIAD(LH,1h20m)-IADIAH(UA,1h15m)-IAHSCL(UA), ticket bought on united.com, LH flights are UA codeshare flights, and everything looks OK except flight IADIAH that i see on FR24 that is almost always late and there is possibility to miss IAHSCL flight. Now i see that there is flight that same day FRAIAH by UA but probably there wasn't class available, it is possible that after contacting the United they will change routing "proactively" or i should assume that i will arrive a day later? ;-) Flights are on Feb 26, so maybe there will be some schedule change - maybe then i can to change to less risky flights?