-He doesn’t know how the game is supposed to be played.
1-What are you talking about? He has won two gold medals.
2-What are you talking about? He won two gold medals.
(He won them at an unspecified time in the past. Perhaps the speaker himself doesn’t know when he won them.)
Are both sentences 1 and 2 acceptable replies to the first sentence?
Is there any difference in their meanings?