I am part of a group of 13 connecting through EWR on Saturday March 9. We arrive from DFW on United Express at 4:41pm and have a 2 hr 24 min layover before our United flight to Frankfurt. It looks like we will be changing terminals in the process. We will be doing our international check-in at DFW, thankfully. The online map of EWR seems to indicate that there is a shuttle between terminals A and C on the secure side. Is that the case? How long can we expect the transfer between gates to take?