We have a 6 hour layover at O'Hare in May. We're just fine with that, as we are connecting from a small regional airport and our other layover options would be too tight for our comfort. We've run through O'Hare more than once, and we are not interested in doing that again!
There is a restaurant in T5 that we would like to eat at during our layover. We should arrive and depart from T3. If I understand correctly, if we take the Airport Transit System (ATS) we have to exit security at T3, re-enter through security at T5, and the repeat that all again to return to T3. However, if we take the Terminal Transfer Bus (TTB) we will not have to exit the secure airside area and will not have to go through security entering T5 or entering back into T3.
Can someone please confirm this information? Thank you!