Mathis₁ hat [das Angebot , [PRO₁ Hockey mitzuspielen]], natürlich gerne angenommen , und Lasse₂ hat [das Angebot , [PRO Hockey mitzuspielen]], natürlich gerne angenommen .
Mathis has the offer  hockey with.to.play of course gladly accepted and Lasse has the offer  hockey with.to.play of course gladly accepted
Of course, Mathis accepted gladly the offer to join the hockey game, and Lasse accepted gladly the offer to join the hockey game.