I believe the Great Commission in Matthew 28:19 is designed for ALL people to hear the Gospel. So ALL people are chosen to hear.
No. The Great Commission is designed to [externally] call people to Christ. Whether or not anyone actually hears totally depends on the sovereign work of the Holy Spirit's effectual, inner call. Have you never read: "Many are called (externally) but few are chosen"?
Now, why don't you answer my questions in 1997? Are you going to pretend that God didn't actively have a hand in the salvation of all the Gentiles in Act s10? Are you going to pretend they weren't the "other sheep" in Jn 10:16?