A month or so back a sUA 757 from ORD parked at gate B9 or B11 cant remember which one, but it was defiantly a sUA 757. As for the NRT flight that always leaves out of N10, and your flight will either arrive at N11, N14, N15 or N16. which are all close together. So 32 minutes should be fine as long as your not delayed out of DEN.