Actually it appears to me that one of you had a lot of lag in their connection. (My guess is the bomber pilot.) What happened was it took that long for the damage packets to get to you. This is VERY rare actually. If you look at the b26 film I posted in General the other day you will hear my b26 take some cannon hits after the attacking plane was already disposed of.
There is no way a bombers guns can hit at 2k yards. The longest that I've ever managed to hit a plane is 1.7k. These pings did no damage whatsoever. You can hit planes at 1.5k pretty easily, but they are sound warfare more than anything else. At 1.2k and in they do some real damage.