The bus arrived at the train station earlier than scheduled, so I was two trains ahead of the train I planed to take.
The bus was late arriving at the train station, so I had take two trains later than I had hoped to.
この場合、次のような言い方ができます。
ーThe bus arrived at the train station earlier than scheduled, so I was two trains ahead of the train I planed to take.
「バスが予定より早く着いたので、乗る予定の電車より2本前の電車に乗った」
ーThe bus was late arriving at the train station, so I had to take two trains later than I had hoped to.
「バスが駅に遅れて着いたので、思ってたより2本遅い電車に乗った」
ご参考まで！
カナダ 
