Audio Component. Event On Audio Finished does not work when the track is finished.

Good afternoon, I have the following problem. I want to add BGM_BattleTheme, which consists of 2 parts: Opening and Main Part.
Opening should be played once per battle and Main Part is looped.

I did through Audio Component, and when Opening finished playing, for some reason Event On Audio Finished, which should start Main Part, is not running. What could be the problem?