If you missed last chat or you want know who's bombed last hangars, then there is a way to see it.
On Android:
Just hit the home button to see your home screen. Then start Dogfight again. The app is still running so you'll see the in-game screen again. But now without the game over menu because it shows "connection lost".
On iOS:
Double-hit the home button to see the taskbar below. Then hit home button again to see your home screen.
Now double-hit the home button again to see the taskbar below. Choose the Dogfight app to see the in-game screen again.
If you don't double-hit the home button to leave the app it probably shows the game menu instead the in-game screen!
And you've to hurry to see all missed informations!
As more of people leave the game before you do it, as more of informations you'll lose.