Yea a gunner position has always resulted in a you have landed message, but the kill message (or lack there of) you describe has not occured yet to me, but I primarily fly B-24's. Got and landed multi kills along with the message at or near the appropriate times, and "they" seem to be getting kill messages for my drones and main plane, due to the HB555 I been getting.
Wondering now if it is just schutt, or maybe plane specific?