Complex sentence: In the United States, due to "Billboard" rules not allowing the charting of non-commercially released songs, it did not chart on the Hot 100, however peaking at number two on the Adult Contemporary chart.
Split into simpler sentences: In the United States, "Billboard" rules did not allow the charting of non-commercially released songs. For this reason, it did not chart on the Hot 100, however peaking at number two on the Adult Contemporary chart.