Maybe I'm dumb
... but I seem to screw up UA international arrivals at T6/T7 transfer to UA domestic every time. Just as you pass customs but before you leave the secure area the signage says "Door A" for street level & arrivals, "Door C" for connecting flights (or maybe the reverse). I manage to end up on the street with a long walk and a big u-turn needed to get back to escalators up to T7 security screening. What's the right way to do this?