reaction needed---- odd play situation:

[Ray Lutz]

I guess it would depend on how long it took the other player to come to get it. You are right if there was a short period I would not kill the play. If several seconds went by with no action then I would finally sound the whistle and award to team B. This situation comes up sometimes on incomplete backward pass where both teams assume it is an incomplete pass and the ball lies there for a period before someone fiqures out what has happened.