Complex sentence: With determination Milan went into the second leg and won it 0-2 winning the tie 4-2 on aggregate and became the first European side to beat Bayern Munich at home in any European competition.
Split into simpler sentences: With determination Milan went into the second leg and won it 0-2 winning the tie 4-2 on aggregate. And thus Milan became the first European side to beat Bayern Munich at home, in any European competition.