I am flying from YOW -> FRA via AC. A colleague is flying ORD -> FRA via AA. We both arrive about the same time. Is it possible for him to meet me at near my arrival gate (before passport control), or do we need to meet in the public area?
The whole Frankfurt airport is connected on the non-schengen side, although for many areas you need to convince FRAport personal to let you through a security check by presenting a BP or a status card for lounges inside. AC arrives in T1B and AA in T1C. The main C area is outside of any security control, so you easily walk over to the C gates following the signs and meet with your friend before the T1C immigration lines. It would be much easier to simply meet outside of immigration, though..